From WordNet (r) 3.0 (2006):
peculiar
adj 1: beyond or deviating from the usual or expected; "a
curious hybrid accent"; "her speech has a funny twang";
"they have some funny ideas about war"; "had an odd
name"; "the peculiar aromatic odor of cloves"; "something
definitely queer about this town"; "what a rum fellow";
"singular behavior" [syn: curious, funny, odd,
peculiar, queer, rum, rummy, singular]
2: unique or specific to a person or thing or category; "the
particular demands of the job"; "has a particular preference
for Chinese art"; "a peculiar bond of sympathy between them";
"an expression peculiar to Canadians"; "rights peculiar to
the rich"; "the special features of a computer"; "my own
special chair" [syn: particular(a), peculiar(a),
special(a)]
3: markedly different from the usual; "a peculiar hobby of
stuffing and mounting bats"; "a man...feels it a peculiar
insult to be taunted with cowardice by a woman"-Virginia
Woolf
4: characteristic of one only; distinctive or special; "the
peculiar character of the Government of the U.S."- R.B.Taney