an eye of which the iris is brown / (vulgar, slang) the anus

The small gap in a needle, with just enough space for a thread to pass through.

plural of eye-opener

(literally) Something that causes the eyes to open, or that opens the eyes. / (informal) Something that provides a sudden insight, or makes something clear that was previously mysterious.

A stare that is superstitiously supposed to be harmful; the evil eye. / A threatening or disapproving glance.

An ability to predict short-term weather. / (by extension) An ability to detect undercurrents and subtleties in a situation. / A device for monitoring the weather.

(idiomatic) A private personal detective, employed to gather information about someone.

(transitive) To stare seductively at (a person).

(now rare) The eye socket; the concave area of the face around each eye.

(Australia) A dragonfly larva.