impinge on impinge on /ɪmˈpɪndʒ ɒn/

verb

1. () Hit against; come into sudden contact with  ( collide with , run into , impinge on , hit , strike )
   hit against; come into sudden contact with
    The car hit a tree
   The car hit a tree
    He struck the table with his elbow
   He struck the table with his elbow