(graph theory) A theorem stating that given any separation of a plane into contiguous regions, producing a figure called a map, no more than four colors are required to color the regions so that no two adjacent regions have the same color (adjacent being defined as two regions sharing a boundary, not counting corners, in which three or more regions share a boundary).

A common thrush of the Americas, Turdus grayi; the national bird of Costa Rica.

A wader, Cursorius cursor.

(idiomatic) To see the positive in things while being oblivious to the negative.

simple past tense and past participle of wear rose colored glasses

simple past tense and past participle of wear rose-colored glasses

Third-person singular simple present indicative form of wear rose-colored glasses

present participle of wear rose-colored glasses

past participle of wear rose-colored glasses

Alternative form of wear rose-colored glasses