The Collaborative International Dictionary of English v.0.48:

Inn \Inn\ ([i^]n), n. [AS. in, inn, house, chamber, inn, from
   AS. in in; akin to Icel. inni house. See In.]
   1. A place of shelter; hence, dwelling; habitation;
      residence; abode. [Obs.] --Chaucer.
      [1913 Webster]

            Therefore with me ye may take up your inn
            For this same night.                  --Spenser.
      [1913 Webster]

   2. A house for the lodging and entertainment of travelers or
      wayfarers; a tavern; a public house; a hotel.
      [1913 Webster]

   Note: As distinguished from a private boarding house, an inn
         is a house for the entertainment of all travelers of
         good conduct and means of payment, as guests for a
         brief period, not as lodgers or boarders by contract.
         [1913 Webster]

               The miserable fare and miserable lodgment of a
               provincial inn.                    --W. Irving.
         [1913 Webster]

   3. The town residence of a nobleman or distinguished person;
      as, Leicester Inn. [Eng.]
      [1913 Webster]

   4. One of the colleges (societies or buildings) in London,
      for students of the law barristers; as, the Inns of Court;
      the Inns of Chancery; Serjeants' Inns.
      [1913 Webster]

   Inns of chancery (Eng.), colleges in which young students
      formerly began their law studies, now occupied chiefly bp
      attorn`ys, solocitors, etc.

   Inns of court (Eng.), the four societies of "students and
      practicers of the law of England" which in London exercise
      the exclusive right of admitting persons to practice at
      the bar; also, the buildings in which the law students and
      barristers have their chambers. They are the Inner Temple,
      the Middle Temple, Lincoln's Inn, and Gray's Inn.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inn \Inn\ ([i^]n), v. i. [imp. & p. p. Inned ([i^]nd); p. pr.
   & vb. n. Inning.]
   To take lodging; to lodge. [R.] --Addison.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Inn \Inn\, v. t.
   1. To house; to lodge. [Obs.]
      [1913 Webster]

            When he had brought them into his city
            And inned them, everich at his degree. --Chaucer.
      [1913 Webster]

   2. To get in; to in. See In, v. t.
      [1913 Webster]

WordNet (r) 3.0 (2006):

inn
    n 1: a hotel providing overnight lodging for travelers [syn:
         hostel, hostelry, inn, lodge, auberge]

Moby Thesaurus II by Grady Ward, 1.0:

22 Moby Thesaurus words for "inn":
   boardinghouse, dorm, dormitory, doss house, fleabag, flophouse,
   guest house, hospice, hostel, hostelry, hotel, lodge,
   lodging house, ordinary, pension, posada, pub, public,
   public house, roadhouse, rooming house, tavern



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

INN
       Inter Node Network


Easton's 1897 Bible Dictionary:

Inn
   in the modern sense, unknown in the East. The khans or
   caravanserais, which correspond to the European inn, are not
   alluded to in the Old Testament. The "inn" mentioned in Ex. 4:24
   was just the halting-place of the caravan. In later times khans
   were erected for the accommodation of travellers. In Luke 2:7
   the word there so rendered denotes a place for loosing the
   beasts of their burdens. It is rendered "guest-chamber" in Mark
   14:14 and Luke 22:11. In Luke 10:34 the word so rendered is
   different. That inn had an "inn-keeper," who attended to the
   wants of travellers.