1. downbow - Noun
2. downbow - Verb
downbow (plural downbows)
(music) A note performed on a string instrument by drawing the bow downward or to the right across the instrument, moving its point of contact from the frog toward the tip of the bow.
downbow (third-person singular simple present downbows, present participle downbowing, simple past and past participle downbowed)
(geology) To curve or arc downwards.