a person or thing that sinks.
a person employed in sinking, as one who sinks shafts.
a weight, as of lead, for sinking a fishing line or net below the surface of the water.
Slang. a doughnut or, sometimes, a biscuit or muffin.
Also called sinkerball. Baseball. a pitched ball that curves downward sharply as it reaches the plate.

1520–30; 1920–25 for def 4; 1925–30 for def 5; sink + -er1

sinkerless, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
sinker (ˈsɪŋkə)
1.  a weight attached to a fishing line, net, etc, to cause it to sink in water
2.  a person who sinks shafts, etc
3.  (US) an informal word for doughnut
4.  hook, line, and sinker See hook

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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American Heritage
Idioms & Phrases


see hook, line, and sinker.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences
They'll fall for anything out there and they did, hook line and sinker.
Your ignorance on ethanol shows how you have sallowed big oil's propaganda
  hook, line and sinker.
Instead of thinking things through for themselves, they seem to believe the
  party line hook line and sinker.
Of course the naive and unserious pundits will buy it hook, line, and sinker.
Idioms & Phrases
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