Definition of be or go on the lash in English:

be (or go) on the lash

British informal Be engaged in (or go on) a heavy drinking session.
More example sentences
  • Too many estate agents on the lash, getting their photos taken for the social page.
  • It can only be a matter of time he goes on the lash with Hitchens.
  • It'll be some local youngster who's parents have given the money to have a good night on the lash.
See parent entry: lash

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Word of the day bimble
Pronunciation: ˈbimbəl
verb
walk or travel at a leisurely pace