The Collaborative International Dictionary of English v.0.48:

Logical \Log"ic*al\ (l[o^]j"[i^]*kal), a. [Cf. F. logique, L.
   logicus, Gr. logiko`s.]
   1. Of or pertaining to logic; used in logic; as, logical
      subtilties. --Bacon.
      [1913 Webster]

   2. According to the rules of logic; as, a logical argument or
      inference; the reasoning is logical; a logical argument; a
      logical impossibility. --Prior.
      [1913 Webster]

   3. Skilled in logic; versed in the art of thinking and
      reasoning; as, he is a logical thinker. --Addison.
      [1913 Webster]

WordNet (r) 3.0 (2006):

logical
    adj 1: capable of or reflecting the capability for correct and
           valid reasoning; "a logical mind" [ant: illogical,
           unlogical]
    2: based on known statements or events or conditions; "rain was
       a logical expectation, given the time of year" [syn:
       legitimate, logical]
    3: marked by an orderly, logical, and aesthetically consistent
       relation of parts; "a coherent argument" [syn: coherent,
       consistent, logical, ordered] [ant: incoherent]
    4: capable of thinking and expressing yourself in a clear and
       consistent manner; "a lucid thinker"; "she was more coherent
       than she had been just after the accident" [syn: coherent,
       logical, lucid]

Moby Thesaurus II by Grady Ward, 1.0:

49 Moby Thesaurus words for "logical":
   admissible, authoritative, balanced, binding, cogent, coherent,
   commonsense, consistent, cool, coolheaded, credible, deductive,
   good, inductive, inferential, intelligent, judicious, just,
   justifiable, lawful, legal, legitimate, levelheaded, philosophical,
   plausible, practical, pragmatic, proper, rational, reasonable,
   sane, self-consistent, sensible, sober, sober-minded, sound,
   substantial, sufficient, syllogistical, valid, weighty,
   well-argued, well-balanced, well-founded, well-grounded,
   well-reasoned, well-thought-out, wholesome, wise



The Jargon File (version 4.4.7, 29 Dec 2003):

logical
 adj.

    [from the technical term logical device, wherein a physical device is
    referred to by an arbitrary ?logical? name] Having the role of. If a person
    (say, Les Earnest at SAIL) who had long held a certain post left and were
    replaced, the replacement would for a while be known as the logical Les
    Earnest. (This does not imply any judgment on the replacement.) Compare 
    virtual.

    At Stanford, ?logical? compass directions denote a coordinate system
    relative to El Camino Real, in which ?logical north? is always toward San
    Francisco and ?logical south? is always toward San Jose--in spite of the
    fact that El Camino Real runs physical north/south near San Francisco,
    physical east/west near San Jose, and along a curve everywhere in between.
    (The best rule of thumb here is that, by definition, El Camino Real always
    runs logical north-south.)

    In giving directions, one might say: ?To get to Rincon Tarasco restaurant,
    get onto El Camino Bignum going logical north.? Using the word ?logical?
    helps to prevent the recipient from worrying about that the fact that the
    sun is setting almost directly in front of him. The concept is reinforced
    by North American highways which are almost, but not quite, consistently
    labeled with logical rather than physical directions. A similar situation
    exists at MIT: Route 128 (famous for the electronics industry that grew up
    along it) wraps roughly 3 quarters around Boston at a radius of 10 miles,
    terminating near the coastline at each end. It would be most precise to
    describe the two directions along this highway as ?clockwise? and
    ?counterclockwise?, but the road signs all say ?north? and ?south?,
    respectively. A hacker might describe these directions as logical north and
    logical south, to indicate that they are conventional directions not
    corresponding to the usual denotation for those words.


The Free On-line Dictionary of Computing (30 December 2018):

logical

   (From the technical term "logical device", wherein a physical
   device is referred to by an arbitrary "logical" name) Having
   the role of.  If a person (say, Les Earnest at SAIL) who had
   long held a certain post left and were replaced, the
   replacement would for a while be known as the "logical" Les
   Earnest.  (This does not imply any judgment on the
   replacement).

   Compare virtual.

   At Stanford, "logical" compass directions denote a coordinate
   system in which "logical north" is toward San Francisco,
   "logical west" is toward the ocean, etc., even though logical
   north varies between physical (true) north near San Francisco
   and physical west near San Jose.  (The best rule of thumb here
   is that, by definition, El Camino Real always runs logical
   north-and-south.)  In giving directions, one might say: "To
   get to Rincon Tarasco restaurant, get onto El Camino Bignum
   going logical north."  Using the word "logical" helps to
   prevent the recipient from worrying about that the fact that
   the sun is setting almost directly in front of him.  The
   concept is reinforced by North American highways which are
   almost, but not quite, consistently labelled with logical
   rather than physical directions.

   A similar situation exists at MIT: Route 128 (famous for the
   electronics industry that has grown up along it) is a
   3-quarters circle surrounding Boston at a radius of 10 miles,
   terminating near the coastline at each end.  It would be most
   precise to describe the two directions along this highway as
   "clockwise" and "counterclockwise", but the road signs all say
   "north" and "south", respectively.  A hacker might describe
   these directions as "logical north" and "logical south", to
   indicate that they are conventional directions not
   corresponding to the usual denotation for those words.  (If
   you went logical south along the entire length of route 128,
   you would start out going northwest, curve around to the
   south, and finish headed due east, passing along one infamous
   stretch of pavement that is simultaneously route 128 south and
   Interstate 93 north, and is signed as such!)

   [Jargon File]

   (1995-01-24)