noun

1. a musical instrument with strings stretched vertically in an open, triangular frame and played by plucking with the fingers: the modern harp has usually forty-six strings and, to permit the playing of halftones, seven foot-pedals
2. a harp-shaped object or implement
3. Slang harmonica (sense )

Etymology: ME < OE hearpe, akin to Ger harfe < Gmc *harpa < IE base *(s)kerb(h)-, to bend, curve (> shrimp): from the shape of the instrument

intransitive verb

1. to play a harp
2. to persist in talking or writing tediously or continuously (on or upon something)

transitive verb