catch onto (something)

catch onto (something)

1. To snag on a particular surface, item, or material, usually with frustrating or unpleasant results. Be careful so that the zipper doesn't catch onto my dress—it's silk!
2. To latch onto something, usually as is intended. You probably need to get your necklace repaired so that this little piece catches onto the clasp securely.
See also: catch
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

catch onto something

[for something] to snag on or get grabbed by something else. (See also onto something.) This little piece has to catch onto this gear each time it comes around. A few threads of my shirt caught onto the cactus needles and ruined the whole thing.
See also: catch
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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