The Collaborative International Dictionary of English v.0.48:

Intimation \In`ti*ma"tion\, n. [L. intimatio: cf. F.
   intimation.]
   [1913 Webster]
   1. The act of intimating; also, the thing intimated.
      [1913 Webster]

   2. Announcement; declaration. --Macaulay.
      [1913 Webster]

            They made an edict with an intimation that whosoever
            killed a stork, should be banished.   --Holland.
      [1913 Webster]

   3. A hint; an obscure or indirect suggestion or notice; a
      remote or ambiguous reference; as, he had given only
      intimations of his design.
      [1913 Webster]

            Without mentioning the king of England, or giving
            the least intimation that he was sent by him. --Bp.
                                                  Burnet.
      [1913 Webster]

WordNet (r) 3.0 (2006):

intimation
    n 1: an indirect suggestion; "not a breath of scandal ever
         touched her" [syn: hint, intimation, breath]
    2: a slight suggestion or vague understanding; "he had no
       inkling what was about to happen" [syn: inkling,
       intimation, glimmering, glimmer]

Moby Thesaurus II by Grady Ward, 1.0:

117 Moby Thesaurus words for "intimation":
   allegory, allusion, arcane meaning, assumption, bare suggestion,
   breath, broad hint, cast, catchword, clue, coloration, connotation,
   cue, cue word, dash, evidence, feeling, foreboding, forefeeling,
   funny feeling, gentle hint, gesture, gleam, glimmer, glimmering,
   half an idea, hazy idea, hint, hot lead, hunch, idea, implication,
   implied meaning, import, impression, index, indication, inference,
   infusion, inkling, innuendo, insinuation, intuition,
   intuitive impression, ironic suggestion, key, key word, kick, lead,
   lick, look, meaning, mere notion, metaphorical sense, nod, notion,
   nuance, nudge, occult meaning, overtone, preapprehension,
   premonition, presentiment, presumption, presupposition, prompt,
   sauce, scent, scintilla, seasoning, shade, shadow, sign, signal,
   sip, smack, smattering, smell, sneaking suspicion, soupcon, spark,
   spice, spoor, sprinkling, strain, streak, subsense,
   subsidiary sense, suggestion, sup, supposition, suspicion,
   symbolism, symptom, taint, taste, telltale, tempering, thought,
   tinct, tincture, tinge, tint, tip-off, touch, trace, track,
   undercurrent, undermeaning, undertone, vague feeling, vague idea,
   vestige, whiff, whisper, wind, wink



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

INTIMATION, civil law. The name of any judicial act by which a notice of a
legal proceeding. is given to some one; but it is more usually understood to
mean the notice or summons which an appellant causes to be given to the
opposite party, that the sentence will be reviewed by the superior judge.
     2. In the Scotch law, it is an instrument, of writing, made under the
hand of a notary, and notified to a party, to inform him of a right which a
third person had acquired; for example, when a creditor assigns a claim
against his debtor, the assignee or cedent must give an intimation of this
to the debtor, who, till then, is justified in making payment to the
original creditor. Kames' Eq. B. 1, p. 1, s. 1.