- landmark⇄adj. (U.S.) serving as a guide in future judicial ruling; setting a legal precedent.
Ex. a landmark Supreme Court decision. - landmark⇄landmark, noun, adjective, verb.
- landmark⇄noun 1. something familiar or easily seen, used as a guide.
Ex. The hiker did not lose his way in the forest because the rangers' high tower served as a landmark.
2. (Figurative.) an important fact or event; a happening that stands out above - landmark⇄v.t. to mark by a landmark; indicate as if by a landmark.
Ex. Wakeful and missing little, and landmarking the flylike dance of the planets ... (Ted Hughes).