noun
Refers to a single eye, often in contrast to both eyes or in contexts like one-eyed creatures or people.
その怪物は額に一眼しか持っていなかった。
The monster had only one eye on its forehead.
noun
single-lens reflex camera
Abbreviation of 一眼レフ (single-lens reflex camera). Used in photography contexts.
See also: 一眼レフ
He bought a new single-lens reflex camera and went out shooting on the weekend.
noun
In the game of Go, a group of stones with only one eye, which is vulnerable to capture.
See also: 眼 (がん)
この石の集まりは一眼しかないので、取られる危険がある。
This group of stones has only one eye, so it is in danger of being captured.