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
Norbert	NAWR-bert (German, Polish), NAWR-bərt (English, Dutch)	German, English, Dutch, French, Hungarian, Polish, Ancient Germanic
Camron	KAM-rən	English (Modern)
Lynette	li-NET	English
Sutton	['sʌtən]
Aristeidis	-	Greek
Kristal	KRIS-təl	English