have a mind like a steel trap

to be able to think very quickly, clearly and intelligently She'll be a brilliant lawyer - she has a mind like a steel trap.

Name	Pronounced	Usage
Gabi	GAH-bee (German)	German, Romanian, Hungarian
Nerys	-	Welsh
Juliana	[dʒu:li'a:nə]
Christobel	-	English (Archaic)
Neo (1)	-	Southern African, Tswana
Koray	-	Turkish