We found one dictionary that defines the word a heads up:

Slang (1 matching dictionary)

1. a heads up: Urban Dictionary

Phrases: give a heads up, given a heads up, gives a heads up, when you give someone a heads up, more... ▸ Words similar to a heads up ▸ Usage examples for a heads up ▸ Idioms related to a heads up ▸ Wikipedia articles (New!) ▸ Words that often appear near a heads up ▸ Rhymes of a heads up ▸ Invented words related to a heads up