The Collaborative International Dictionary of English v.0.48:

Chilly \Chill"y\, a.
   Moderately cold; cold and raw or damp so as to cause
   shivering; causing or feeling a disagreeable sensation of
   cold, or a shivering.
   [1913 Webster]

WordNet (r) 3.0 (2006):

chilly
    adj 1: not characterized by emotion; "a female form in marble--a
           chilly but ideal medium for depicting abstract
           virtues"-C.W.Cunningham
    2: appreciably or disagreeably cold [syn: chilly, parky]
    3: lacking warmth of feeling; "a chilly greeting"
    n 1: very hot and finely tapering pepper of special pungency
         [syn: chili, chili pepper, chilli, chilly, chile]

Moby Thesaurus II by Grady Ward, 1.0:

126 Moby Thesaurus words for "chilly":
   Olympian, above all that, affectless, aguey, aguish, algid, aloof,
   anesthetized, arctic, autistic, backward, bashful, blank,
   blue with cold, blunt, bracing, catatonic, chattering, chill,
   chilled, cold, cold as charity, cold-blooded, coldhearted,
   constrained, cool, coolish, crisp, detached, disaccordant,
   discreet, dispassionate, distant, dithery, drugged, dull,
   emotionally dead, emotionless, exclusive, expressionless,
   forbidding, freezing, fresh, frigid, frosted, frosty, frozen,
   frozen to death, gelid, glacial, guarded, half-frozen, heartless,
   hostile, icy, immovable, impassible, impassive, impersonal,
   inaccessible, incompatible, inexcitable, inhospitable, inimical,
   insusceptible, introverted, invigorating, modest, nippy,
   nonemotional, objective, obtuse, offish, out of touch, passionless,
   remote, removed, repressed, reserved, restrained, reticent,
   retiring, seclusive, self-absorbed, shaky, shivering, shivery,
   shrinking, soulless, spiritless, standoff, standoffish,
   stimulating, strained, subdued, suppressed, temperate, tense,
   unaffable, unaffectionate, unamiable, unamicable, unapproachable,
   uncongenial, uncordial, undemonstrative, unemotional,
   unenthusiastic, unexpansive, unfeeling, unfriendly, ungenial,
   unharmonious, unimpassioned, unimpressionable, unloving,
   unpassionate, unreceptive, unresponding, unresponsive, unsociable,
   unsusceptible, unsympathetic, untouchable, with chattering teeth,
   withdrawn