from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A fastener consisting of a threaded bolt and a spring-loaded toggle, used to secure objects to thin or hollow walls.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A fastening device consisting of a bolt and a pair of hinged, usually
sprung, wings threaded at the hinge to receive the bolt, used by inserting the bolt with wings folded into a small hole in a sheet material to the point where the wings unfold and the bolt can be tightened.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a fastener consisting of a threaded bolt and a hinged spring-loaded toggle; used to fasten objects to hollow walls
from Wiktionary, Creative Commons Attribution/Share-Alike License
From the resemblance of the hinged wings to a toggle
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