Denshi Jisho — Online Japanese dictionary

飛ぶ とぶ 1: to jump; to leap; to spring; to bound; to hop;
2: to fly; to soar
Common word, Godan verb with bu ending, Intransitive verb 
飛ぶ鳥 とぶとり flying bird; soaring bird
Noun 
飛ぶように売れる とぶようにうれる to sell like hot cakes; to fly off the shelves
Expression, Ichidan verb 
飛ぶ鳥跡を濁さず とぶとりあとをにごさず it is simply common courtesy to clean up after yourself; a bird does not foul the nest it is about to leave; on leaving a place one should see that all is in good order
Expression 
飛ぶ鳥も落とす勢い とぶとりもおとすいきおい great vigor; tremendous energy; lit: forceful enough to knock down birds in flight
Expression, Idiomatic expression 
飛ぶ鳥を落とす勢い とぶとりをおとすいきおい great vigor; tremendous energy; lit: forceful enough to knock down birds in flight
Expression, Idiomatic expression 

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