Wiktionary
n. 1 An extra check or verification made a second time, usually with additional caution or attention. 2 (context chess uncountable English) A situation in which a king is attacked by two of the opponent's men at once. vb. To check again; to check with extra caution or attention; to verify or make sure.
WordNet
n. something that checks the correctness of a previous check [syn: countercheck]
Wikipedia
Double Check is a 1982 sculpture by John Seward Johnson II, located in Zuccotti Park in Manhattan, New York City.
Double Check is the debut studio album by R&B singer Jernade Miah, released on 29 October 2010 by 2Point9 Records.
Usage examples of "double check".
On a morning of drizzling spring rain, with the cloak's fur sticking up in spiky wet patches and her hand grateful for the leather grip on her staff, Kelyn blinked water from her lashes to double check what she thought she saw—.