To run a marathon. / (informal, transitive) To watch or read a large number of instalments of (a film, book, TV series, etc.) in one sitting.

simple past tense and past participle of knock on wood

(mathematics, geometry) An angle measuring less than ninety degrees.

(anatomy) A muscular partition, formed by the muscle fibers of the levator ani, the coccygeus, and associated connective tissue, which spans the area underneath the pelvis.