noun (used with a plural verb)
Origin of blue jeans
First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Word Origin and History for blue jeans
from 1843 as a type of fabric; see jean. As short for blue jeans trousers, from 1878.
Online Etymology Dictionary, © 2010 Douglas Harper