The Collaborative International Dictionary of English v.0.48:

Adjournment \Ad*journ"ment\ (-ment), n. [Cf. f. adjournement,
   OF. ajornement. See Adjourn.]
   1. The act of adjourning; the putting off till another day or
      time specified, or without day.
      [1913 Webster]

   2. The time or interval during which a public body adjourns
      its sittings or postpones business.
      [1913 Webster]

WordNet (r) 3.0 (2006):

adjournment
    n 1: the termination of a meeting [syn: adjournment,
         dissolution]
    2: the act of postponing to another time or place

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

ADJOURNMENT. The dismissal by some court, legislative assembly, or properly
authorized officer, of the business before them, either finally, which is
called an adjournment sine die, without day; or, to meet again at another
time appointed, which is called a temporary adjournment. 2. The constitution
of the United States, art. 1, s. 5, 4, directs that "neither house, during
the session of congress, shall, without the consent of the other, adjourn
for more than three days, nor to any other place, that that in which the two
houses shall be sitting." Vide Com. Dig. h.t.;  Vin. Ab. h.t.; Dict. de
Jur. h.t.