Usually field glasses. binoculars for use out of doors.
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How to use field glass in a sentence
Gwynne fetched Isabel's field-glass and studied the scene below, picking out the more disastrous work of the earthquake.Ancestors | Gertrude Atherton
Some minutes after he ran back, bringing an excellent field-glass that had served him in many a voyage.The Seven Cardinal Sins: Envy and Indolence | Eugne Sue
With his field-glass, Thurstane examined one after another of the mesas and buttes which diversified this enormous depression.
With his field-glass he could distinguish every action of the tragedy which was being enacted on the plain.
Thurstane swept his field-glass around once more, searching for some outlet besides the horrible cañon, and searching in vain.
British Dictionary definitions for field glass
a small telescope often incorporating a prism and held in one hand
a former name for field glasses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012