What is the meaning of Wallop?

A heavy blow, a punch.

A person's ability to throw such punches.

An emotional impact, a psychological force.

A thrill, an emotionally excited reaction.

Anything produced by a process that involves boiling; beer, tea, or whitewash.

A thick piece of fat.

A quick rolling movement; a gallop.

To rush hastily.

To flounder, wallow.

To boil with a continued bubbling or heaving and rolling, with noise.

To strike heavily, thrash soundly.

To trounce, beat by a wide margin.

To wrap up temporarily.

To move in a rolling, cumbersome manner; to waddle.

To eat or drink with gusto.

To send a message to all operators on an Internet Relay Chat server.

Source: wiktionary.org