horsewhip noun 1verb 1forms 3 noun1 •A whip for use on horses.Hearing the rout, Dame Gill came out, With a horse whip from the door, She laid it on Jack, And poor Jill's back, Until they both did roar. — 1810 verb1 •To flog or lash (someone or something) with a horsewhip.[T]heir children were horsewhipped by the grieve when found trespassing; […] — 1815 formshorsewhipped · horsewhipping · horsewhips