cob
1 Americannoun
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a corncob.
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a male swan.
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a short-legged, thick-set horse, often having a high gait and frequently used for driving.
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British. a mixture of clay and straw, used as a building material.
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British Dialect. a rounded mass or lump.
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a crude silver or gold Spanish-American coin of the 16th to 18th centuries, characteristically irregular in shape and bearing only a partial impression of the dies from which it was struck.
abbreviation
noun
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a male swan
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a thickset short-legged type of riding and draught horse
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short for corncob corncob pipe cobnut
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another name for hazel
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a small rounded lump or heap of coal, ore, etc
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a building material consisting of a mixture of clay and chopped straw
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Also called: cob loaf. a round loaf of bread
verb
noun
Etymology
Origin of cob
First recorded in 1375–1425; late Middle English cobbe “male swan, leader of a gang”; these and various subsequent senses are obscurely related and probably in part of distinct origin
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The COB has joined calls for Paz to step down.
From Barron's • May 18, 2026
Eighteen of the 21 people killed in encounters with police officers during the four-year period were Black, and three were white, the COB report shows.
From Seattle Times • May 5, 2021
“I need this done by COB tomorrow,” Manafort emailed Gates at 3 a.m. the next day.
From Washington Post • Aug. 10, 2018
"COB" was Jeremy Corbyn's codename, that much was obvious.
From BBC • Feb. 25, 2018
Therefore the angle POP' is constant, being equal to half the constant angle AOC + COB.
From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.