whack Meaning, Definition & Usage

  1. noun the sound made by a sharp swift blow
  2. noun the act of hitting vigorously
    knock; whang; rap; belt.
    • he gave the table a whack
  3. verb hit hard
    wham; whop; wallop.
    • The teacher whacked the boy

WordNet

Whack transitive verb
Etymology
Cf. Thwack.
Wordforms
imperfect & past participle Whacked ; present participle & verbal noun Whacking
Definitions
  1. To strike; to beat; to give a heavy or resounding blow to; to thrash; to make with whacks. Colloq.
    Rodsmen were whackingtheir way through willow brakes. G. W. Cable.
Whack intransitive verb
Definitions
  1. To strike anything with a smart blow.
Whack noun
Definitions
  1. A smart resounding blow. Colloq.

Webster 1913