use one's head

Think, have common sense, as in Use your head, Martin. No one's coming out in this weather. This idiom uses head in the sense of "brain" or "intellect," a usage dating from the late 1300s.

Common Names:

Name	Pronounced	Usage
Nechemyah	-	Biblical Hebrew
Morrigan	-	Irish Mythology
Europa	-	Greek Mythology (Latinized)
Bryanna	-	English (Modern)
Moyna	-	Irish, Scottish
Wilky	-	Medieval English