Webster's English Dictionary

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crossing

cross.ing n 1: the act or action of crossing : as  1a: a traversing or 
   traveling across  1b: an opposing, blocking, or thwarting esp. in an unfair 
   or dishonest mann er 1c: INTERBREEDING, HYBRIDIZING  2: a point of 
   intersection  3: a place where a street or stream is crossed