Describing a phased-array radar powerful enough to pick aircraft out of ground clutter from high altitude.

Alternative form of look-down, shoot-down

(US, informal) A guide dog for people who suffer from impaired vision.

Alternative form of look-down, shoot-down

A US dollar coin featuring a portrait of Sacagawea.

Alternative form of double-u / something in the shape of two U's (not of a W)

Ready to accept instruction or direction; obedient; subservient. / Yielding to control or supervision, direction, or management.

(intransitive) To assume a sitting position from a standing position. / (transitive or reflexive) To cause to be seated or in a sitting posture; to furnish a seat to.

(idiomatic, euphemistic, colloquial) To perform oral sex upon (a person of either sex).

(US, idiomatic) So common as to be practically worthless.