by Jessica May 13, 2005

by WordRepoMan April 5, 2013

1. adjective; appalling in nature, unconventional.
2. verb; to strike one with the hand or fist.
3. verb; to assassinate.
2. verb; to strike one with the hand or fist.
3. verb; to assassinate.
1. yo, that's whack.
2. if your mother heard that she'd whack you upside the head.
3. you want we should whack a dog?
2. if your mother heard that she'd whack you upside the head.
3. you want we should whack a dog?
by bud newman. February 28, 2003

1) When power is applied on a diesel locomotive and then engine revs up.
2) People shout WHACK when window hanging behind a diesel locomotive, when it revs up and starts to thrash.
2) People shout WHACK when window hanging behind a diesel locomotive, when it revs up and starts to thrash.
by Tomton THD June 18, 2020

by Tanzeel Ahmed July 16, 2008
