That pierces, penetrates, or perforates as, or in the manner of, a sharp-pointed object; sharp, cutting.

Piercing, penetrative.

Of the eyes, etc.: critical, searching.

= lyncean, adj.

Of the eyes, sight, etc.: Resembling that of a lynx, keen; also of persons: lynx-like; sharp-sighted.

Having the power or capacity of a telescope; able to see distant things, far-seeing; contemplating something distant. In later use chiefly figurative.

Resembling a ferret or a ferret's.

Of a person's eyes: narrow; peering, squinting.

Of a person's eyes: characterized by peeping or peering; narrow.

Of eyes: piercing like a gimlet.

= dark-adapted adj. at dark, n. compounds.