couple (something) (on) to (something)

couple (something) (on) to (something)

To connect or fasten two things together. We still need to couple the trailer to the truck before we can leave. I coupled the latch on to the peg, so it should stay secure.
See also: couple
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

couple something (on)to something

 and couple something on (to something); couple something on
to attach something to something. Couple this connector to that one. The railroad worker coupled on the next car in line. Couple the green one onto the red one.
See also: couple
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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