to beat soundly; thrash.

Informal . to strike with a vigorous blow; belt; sock

After two strikes, he walloped the ball out of the park.

Informal . to defeat thoroughly, as in a game.

Chiefly Scot. to flutter, wobble, or flop about.

Informal . to move violently and clumsily

The puppy walloped down the walk.

(of a liquid) to boil violently.

Obsolete . to gallop.

a vigorous blow.

the ability to deliver vigorous blows, as in boxing

That fist of his packs a wallop.

Informal .

the ability to effect a forceful impression; punch

That ad packs a wallop.

a pleasurable thrill; kick

The joke gave them all a wallop.

Informal . a violent, clumsy movement; lurch.

Obsolete . a gallop.