To hit or smack (Irish sl.) similar to clout,wallop etc.
"If I catch you, I'll larrap you, horrid child!.
by Wexford Man March 20, 2005
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Raining heavy , Torrential,usually accomplished by thunderstorms
Quick get the washing in

it's larraping down

It's not good here,it's been larraping down all day
by JONTERRIES July 15, 2021
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