noun
Johnny
JON-ee
noun
1
British slang for a condom.
"Make sure you've got a johnny before you go out."
2
A hospital gown that fastens at the back.
"The nurse handed her a johnny to change into before the scan."
How to Use Johnny
Learner’s notesIn plain EnglishAn informal British word for a condom, or (in US hospitals) the open-backed gown patients wear.
When to use it
The condom sense is casual British slang; the gown sense is common informal American usage.
Word Forms
johnnies plural
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Make sure you've got a _____ before you go out.
Etymology
From the personal name John, used generically as slang for various everyday objects.