Definitions

1. noun

a stringed musical instrument with one or more necks and usually a triangular body, played by plucking the strings with the fingers or a plectrum

“The musician played a beautiful melody on her harp at the wedding reception.”

2. verb

to pluck or play on a harp

“She learned to harp beautifully and was soon performing in front of large audiences.”

3. verb (transitive)

to sing or play in a complaining or mournful manner

“The children started to harp on about how they didn’t want to go to bed.”

4. noun (informal)

a person who constantly complains or criticizes

“He was a bit of a harp, always finding fault in everything.”