Definition of johnny in English:

johnny

Syllabification: john·ny
Pronunciation: /ˈjänē
 
/

noun (plural johnnies)

informal
1US A short gown fastened in the back, worn by hospital patients.
More example sentences
  • Nicholson has a gift for physical comedy, swaying dizzily in a hospital johnny that unflatteringly reveals his derrière.
2British Used as a name for an unknown man, often suggesting that he is unimportant or insignificant: the security johnny insists that you sign the visitors' book
More example sentences
  • One fella on the bus seemed particularly pleased with himself and not unjustly the crowd called him a johnny.
  • It was just those terrible scientist johnnies!
  • Whereas the British want to see children's faces light up with joy, those foreign johnnies prefer to scare the living daylights out of them.

Origin

late 17th century (sense 2): nickname for the given name John.

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