adjective [ only before noun ]
1.
( of a road accident ) caused by a driver who does not stop to help :
a hit-and-run accident / death
a hit-and-run driver (= one who causes an accident but drives away without helping)
2.
( of a military attack ) happening suddenly and unexpectedly so that the people attacking can leave quickly without being hurt :
hit-and-run raids
► ˌhit-and-ˈrun noun :
He was killed in a hit-and-run.