have a mind like a steel trap

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have a mind like a steel trap

To be able to understand or grasp information quickly. David has a mind like a steel trap, so if you give him the instructions, he'll follow them perfectly.
See also: have, like, mind, steel, trap
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

mind like a steel trap, have a

Be very quick to understand something, as in Aunt Ida may be old, but she still has a mind like a steel trap. This simile likens the snapping shut of an animal trap to a quick mental grasp.
See also: have, like, mind, steel
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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