Definition of crow's nest Crow's nest

We found 3 definitions of crow's nest from 3 different sources.

What does crow's nest mean?

Noun
crow's nest - platform for a lookout at or near the top of a mast
		platform a raised horizontal surface; "the speaker mounted the platform"

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crow's nest (Noun)
A small open-top shelter, originally a cask, on the top of the foremast, large enough to accommodate a lookout. It was used by whalers to watch for a blow spout, or in icebound waters to seek a channel.

crow's nest
A small shelter for the look-out man: sometimes made with a cask, at the top-gallant mast-head of whalers, whence fish are espied. Also, for the ice-master to note the lanes or open spaces in the ice.