Definition of "no-go" in English

adjective

1. Not functioning properly.

2. (of a place) Not to be entered.

   • They lived in a no-go part of the ghetto.
   • The noise and drunkenness made the area a no-go zone at night for families.

3. (manufacturing, of a gauge) That should not go (i.e., enter or engage) if the size of the part being measured is properly achieved.

   • no-go gauge
   • This bore is no good: the no-go pin is flying right into the first half of it.

noun

1. (manufacturing, colloquial, by ellipsis) A no-go gauge.

   • There's your problem right there. See how that no-go slips right into the hole? The whole thing is scrap, unfortunately.

2. Alternative form of no go.