If you speak to your mother like that again, you’ll get a thrashing.thrashingthrash‧ing /ˈθræʃɪŋ/ noun [countable] especially British English 
If you speak to your mother like that again, you’ll get a thrashing. I’ll give you the thrashing you deserve.2informal an occasion when you defeat someone or are defeated very easily in a game: The manager resigned after his team’s 14–0 thrashing.
EXAMPLES FROM THE CORPUS
- Could we arrange for such offenders to have a sound thrashing?
- It sounds to me as if you all need a jolly good thrashing.
- Last week in the House, I suggested that such people should be given a sound thrashing.
- Wigan's victory was also a record defeat for Swinton - beating the 76-3 thrashing by Huddersfield in 1946.
COLLOCATIONS FROM THE ENTRY If you speak to your mother like that again, you’ll get a thrashing. I’ll give you the thrashing you deserve.COLLOCATIONS FROM THE CORPUSVERB
1an occasion when you beat someone or are beaten violently as a punishment: If you speak to your mother like that again, you’ll get a thrashing. I’ll give you the thrashing you deserve.· Last week in the House, I suggested that such people should be given a sound thrashing.
If you speak to your mother like that again, you’ll get a thrashing. I’ll give you the thrashing you deserve.2informal an occasion when you defeat someone or are defeated very easily in a game: The manager resigned after his team’s 14–0 thrashing.