Meaning

noun a musical percussion instrument; usually consists of a hollow cylinder with a membrane stretched across each end

noun the sound of a drum

noun a bulging cylindrical shape; hollow with flat ends

originPerhaps back-formation from drumslade (“drummer”), from Middle Dutch trommelslach (“drumbeat”), from trommel (“drum”) + slach (“beat”) (Dutch slag). Or perhaps borrowed directly from a continental Germanic language; compare Middle Dutch tromme (“drum”), Middle Low German trumme (“drum”) et al. Compare also Middle High German trumme, trumbe (“drum”), Old High German trumba (“trumpet”).

Etymology from Wiktionary, CC BY-SA 3.0