Archer's binocular hung at the south-west pillar of the porch, and another swung at the northward veranda of the old log hospital.
The Captain applied his binocular telescope to his eyes as he spoke.
An ordinary opera-glass or binocular is a very useful instrument for looking at the stars in the heavens.
The painter cannot imitate focal perspective or binocular perspective.
Nares went below, fetched up his binocular, and fell into a silent perusal of the sea-line: I also, with my unaided eyesight.
From this it is easy to trace the laws of binocular diplopia.
From his saddle Langdon unslung a binocular glass imported from Paris.
If no binocular fusion exists, then all possibility of diplopia is excluded.
Poole re-focussed the binocular, but it was some moments before he spoke.
Kirtley's binocular, strung over his shoulders, came in handy to the others.
1738, "involving both eyes," earlier "having two eyes" (1713), from French binoculaire, from Latin bini "two by two, twofold, two apiece" (see binary) + ocularis "of the eye," from oculus "eye" (see eye (n.)). The double-tubed telescopic instrument (1871, short for binocular glass) earlier was called a binocle. Related: Binocularity.
binocular bin·oc·u·lar (bə-nŏk'yə-lər, bī-)
Adapted to the use of both eyes. Used of an optical instrument.