a chest, drawer, compartment, closet, or the like, that may be locked, especially one at a gymnasium, school, etc. for storage and safekeeping of clothing and valuables.
Nautical. a chest or compartment in which to stow things.
a refrigerated compartment, as in a locker plant, that may be rented for storing frozen foods.
a person or thing that locks.
Digital Technology, music locker.

1375–1425; late Middle English loker. See lock1, -er1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
locker (ˈlɒkə)
1.  a.  a small compartment or drawer that may be locked, as one of several in a gymnasium, etc, for clothes and valuables
 b.  (as modifier): a locker room
2.  a person or thing that locks
3.  (US), (Canadian) a refrigerated compartment for keeping frozen foods, esp one rented in an establishment

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

mid-15c., from M.E. lokken (see lock (1)).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Idioms & Phrases


see Davy Jones's locker.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
At the state level the locker room is smaller and perhaps even more firmly
The tunnel led to a long hallway, where she took her place standing against the
  wall across from the players' locker room.
His retirement package included keys to the locker room showers.
Coles entered the locker room knowing he would not dress.
Idioms & Phrases
Image for locker
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