harpsichord UK /ˈhɑː(ɹ)p.sɪ.kɔː(ɹ)d/US /ˈhɑɹp.sɪˌkɔɹd/ noun1 •A stringed musical instrument with a keyboard, the mechanical precusor to the fortepiano, in which each key causes a plectrum to pluck a corresponding tuned string, producing a bright, sharp tone similar to that of a harp. formsharpsichords