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air cock
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noun
Machinery. a special type of valve for controlling the flow of air.
QUIZ
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Test how much you really know about regular and irregular plural nouns with this quiz.
Question 1 of 9
Which of the following nouns has an irregular plural form?
Origin of air cock
First recorded in 1790–1800
Words nearby air cock
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022