A species of gerygone, Gerygone chloronota, of northern Australia and New Guinea, having dark olive green upperparts.

(chess) A checkmate delivered by a major piece along the back rank against a king whose advancement is prevented by pieces of its own color (most commonly pawns).

simple past tense of break one's back

present participle of put one's back into

present participle of break one's back

past participle of break one's back

Third-person singular simple present indicative form of put one's back into

Third-person singular simple present indicative form of break one's back

(informal, idiomatic, chiefly finance, chiefly US) To take advantage of favourable pricing by purchasing a large amount.

Rhipidura rufidorsa, a species of Rhipiduridae bird.