Wordnet 3.0
NOUN (1)
1.
anything that happens suddenly or by chance without an apparent cause;
- Example: "winning the lottery was a happy accident"- Example: "the pregnancy was a stroke of bad luck"- Example: "it was due to an accident or fortuity"[syn: accident, stroke, fortuity, chance event]
WordNet (r) 3.0 (2006):
chance event
n 1: anything that happens suddenly or by chance without an
apparent cause; "winning the lottery was a happy accident";
"the pregnancy was a stroke of bad luck"; "it was due to an
accident or fortuity" [syn: accident, stroke,
fortuity, chance event]