noun

• (obsolete) A bassoon-like medieval musical instrument.
• (obsolete) A large liquor container made of leather, in the form of a jug or a bottle.
  "[…] yond same black cloud, yond huge one, / looks like a foul bombard that would shed his liquor."
• (poetic, rare) A bombardment.
  "With mines and parallels contracts the space; Then bids the battering floats his labors crown And pour their bombard on the shuddering town"
• (music) A bombardon.

verb

• (figuratively) To attack something or someone by directing objects at them.
  "My correspondent, who was riding in the first coach, comments that the small standard tender did not take kindly to this gay progress, and signified its disapproval from time to time by bombarding the train with lumps of coal!"
• (figuratively) To continuously send or direct (at someone)
  "I was bombarded with WhatsApp messages after appearing on the news."
• (physics) To direct at a substance an intense stream of high-energy particles, usually sub-atomic or made of at most a few atoms.