visually attractive / that attracts the attention; attention-grabbing

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

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

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.

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

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

A person with keen eyesight or one who is especially observant. / (US) A native or inhabitant of Iowa.

A secretive, pining look, or humble doting glance.

A visual organ found in arthropods such as insects and crustaceans. It consists of one to thousands of tiny independent photoreception units.