The Collaborative International Dictionary of English v.0.48:

Constitutional \Con`sti*tu"tion*al\, n.
   A walk or other exercise taken for one's health or
   constitution. [Colloq.] --Thackeray.
   [1913 Webster]

         The men trudged diurnal constitutionals along the
         different roads.                         --Compton
                                                  Reade.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Constitutional \Con`sti*tu"tion*al\
   (k[o^]n`st[i^]*t[=u]"sh[u^]n*al), a. [Cf. F.
   constitutionnel.]
   1. Belonging to, or inherent in, the constitution, or in the
      structure of body or mind; as, a constitutional infirmity;
      constitutional ardor or dullness.
      [1913 Webster]

   2. In accordance with, or authorized by, the constitution of
      a state or a society; as, constitutional reforms.
      [1913 Webster]

   3. Regulated by, dependent on, or secured by, a constitution;
      as, constitutional government; constitutional rights.
      --Hallam.
      [1913 Webster]

   4. Relating to a constitution, or establishment form of
      government; as, a constitutional risis.
      [1913 Webster]

            The anient constitutional traditions of the state.
                                                  --Macaulay.
      [1913 Webster]

   5. For the benefit or one's constitution or health; as, a
      constitutional walk. [Colloq.]
      [1913 Webster]

   Constitutional law, law that relates to the constitution,
      as a permanent system of political and juridical
      government, as distinguished from statutory and common
      law, which relate to matters subordinate to such
      constitution.
      [1913 Webster]

WordNet (r) 3.0 (2006):

constitutional
    adj 1: of benefit to or intended to benefit your physical
           makeup; "constitutional walk"
    2: sanctioned by or consistent with or operating under the law
       determining the fundamental political principles of a
       government; "the constitutional right of free speech";
       "constitutional government"; "constitutional guarantees"
       [ant: unconstitutional]
    3: existing as an essential constituent or characteristic; "the
       Ptolemaic system with its built-in concept of periodicity";
       "a constitutional inability to tell the truth" [syn: built-
       in, constitutional, inbuilt, inherent, integral]
    4: constitutional in the structure of something (especially your
       physical makeup) [syn: constituent(a), constitutional,
       constitutive(a), organic]
    n 1: a regular walk taken as a form of exercise

Moby Thesaurus II by Grady Ward, 1.0:

156 Moby Thesaurus words for "constitutional":
   absolute, actionable, affective, airing, amble, ambulation,
   applicable, aristocratic, atavistic, athletics, authoritarian,
   authorized, autocratic, autonomous, beneficial, benign, bodily,
   born, bracing, breather, bureaucratic, calisthenics,
   characteristic, civic, civil, coeval, competent, congenital,
   connatal, connate, connatural, daily dozen, deep-seated,
   democratic, despotic, dictatorial, dispositional, drill, emotional,
   essential, exercise, exercising, fascist, federal, federalist,
   federalistic, footwork, forced march, genetic, good, good for,
   governmental, gubernatorial, gymnastic exercises, gymnastics,
   health-enhancing, health-preserving, healthful, healthy,
   hereditary, heteronomous, hike, hygeian, hygienic, in the blood,
   inborn, inbred, incarnate, indigenous, ingrained, inherited,
   innate, instinctive, instinctual, intellectual, intrinsic,
   invigorating, isometrics, jaunt, judicial, juridical, just,
   justiciable, kosher, lawful, lawmaking, legal, legislative, legit,
   legitimate, legwork, licit, march, matriarchal, matriarchic,
   mental, monarchal, monarchial, monarchic, monocratic, mush, native,
   native to, natural, natural to, official, oligarchal, oligarchic,
   organic, parade, parliamentarian, parliamentary, patriarchal,
   patriarchic, perambulation, peripatetic journey, peripateticism,
   physical, physical education, physical jerks, pluralistic,
   political, practice, primal, promenade, ramble, refreshing,
   republican, rightful, salubrious, salutary, sanctioned, sanitary,
   saunter, schlep, self-governing, setting-up exercises, spiritual,
   statutory, stretch, stroll, temperamental, theocratic, tonic,
   totalitarian, traipse, tramp, trudge, turn, valid, walk,
   walking tour, wholesome, within the law, workout, yoga



Bouvier's Law Dictionary, Revised 6th Ed (1856):

CONSTITUTIONAL. That which is consonant to, and agrees with the
constitution.
     2. When laws are made in violation of the constitution, they are null
and void: but the courts will not declare such a law void unless there
appears to be a clear and unequivocal breach of the constitution. 4 Dall. R.
14; 3 Dall. R. 399; 1 Cranch, R. 137; 1 Binn. R. 415 6 Cranch, R. 87, 136; 2
Hall's Law Journ. 96, 255, 262; 3 Hall's Law Journ. 267; Wheat. Dig. tit.
Constitutional Law; 2 Pet. R. 522; 2 Dall. 309; 12 Wheat. R. 270; Charlt. R.
175,.235; 1 Breese, R. 70, 209; 1 Blackf. R. 206 2 Porter, R. 303; 5 Binn.
355; 3 S. & R. 169; 2 Penn. R. 184; 19 John. R. 58; 1 Cowen, R. 550; 1
Marsb. R. 290 Pr. Dec. 64, 89 2 Litt. R. 90; 4 Monr R. 43; 1 South. R. 192;
7 Pick. R. 466; 13 Pick. R. 60 11 Mass. R. 396; 9 Greenl. R. 60; 5 Hayw. R.
271; 1 Harr. & J. 236; 1 Gill & J. 473; 7 Gill & J. 7; 9 Yerg. 490; 1 Rep.
Const. Ct. 267; 3 Desaus. R. 476; 6 Rand. 245; 1 Chip. R. 237, 257; 1 Aik.
R. 314; 3 N. H. Rep. 473; 4 N. H. Rep. 16; 7 N. H. Rep. 65; 1 Murph. R. 58.
See 8 Law Intell. 65, for a list of decisions made by the supreme court of
the United States, declaring laws to be unconstitutional.