off one\'s rocker

[rok-er]

rock·er

[rok-er]
noun
1.
Also called runner. one of the curved pieces on which a cradle or a rocking chair rocks.
3.
a rock-'n'-roll song: She sang a ballad and followed that with two of her well-known rockers.
4.
any of various devices that operate with a rocking motion.
5.
Graphic Arts. a small steel plate with one curved and toothed edge for roughening a copperplate to make a mezzotint.
EXPAND
6.
Mining. cradle (def. 13).
7.
an ice skate that has a curved blade.
8.
a performer or fan of rock music.
COLLAPSE
9.
off one's rocker, Slang. insane; crazy: You're off your rocker if you think I'm going to climb that mountain.

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Off one's rocker is always a great word to know.
So is gobo. Does it mean:
a gadget; dingus; thingumbob.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.

Origin:
1400–50; late Middle English: one who rocks a cradle; see rock2, -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Slang Dictionary

off (one's) rocker definition


  1. mod.
    silly; giddy; crazy. (See also rocker.) : That silly dame is off her rocker.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition.
Copyright 2007. Published by McGraw Hill.
Cite This Source
American Heritage
Idioms & Phrases

off one's rocker

Also, off one's nut or trolley. See off one's head.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
Cite This Source
Dictionary.com, LLC. Copyright © 2012. All rights reserved.
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