oddity

n. odd thing; unique thing; unusual happening; anomaly

(n.)
The quality or state of being odd; singularity; queerness; peculiarity; as, oddity of dress, manners, and the like.
  

(n.)
That which is odd; as, a collection of oddities.
  

Noun
1. eccentricity that is not easily explained
(synonym) oddness
(hypernym) eccentricity
2. a strange attitude or habit
(synonym) queerness, quirk, quirkiness, crotchet
(hypernym) unfamiliarity, strangeness
3. something unusual -- perhaps worthy of collecting
(synonym) curio, curiosity, oddment, peculiarity, rarity
(hypernym) object, physical object
(hyponym) bric-a-brac, knickknack, nicknack, knickknackery, whatnot