Definition of "bombard"

bombard¹

/ˌbɒmˈbɑːd/

noun
plural bombards
1. a medieval primitive cannon, used chiefly in sieges for throwing heavy stone balls.
  Quotations
  They planted in divers places twelve great bombards, wherewith they threw huge stones into the air, which, falling down into the city, might break down the houses.
  1603, Richard Knolles, The Generall Historie of the Turkes, […], London: […] Adam Islip
2. (obsolete) a bassoon-like medieval instrument
3. (obsolete) a large liquor container made of leather, in the form of a jug or a bottle.
  Quotations
  […] yond same black cloud, yond huge one, / looks like a foul bombard that would shed his liquor.
  1610–1611 (date written), William Shakespeare, “The Tempest”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act II, scene ii]
4. (poetic, rare) A bombardment.
  Quotations
  With mines and parallels contracts the space; Then bids the battering floats his labors crown And pour their bombard on the shuddering town
  1807, Joel Barlow, The Columbiad
5. (music) A bombardon.

bombard²

/ˌbɒmˈbɑːd/

verb
third-person singular simple present bombards, present participle bombarding, simple past and past participle bombarded
1. To continuously attack something with bombs, artillery shells or other missiles or projectiles.
2. (figuratively) To attack something or someone by directing objects at them.
3. (figuratively) To continuously send or direct (at someone)
4. (physics) To direct at a substance an intense stream of high-energy particles, usually sub-atomic or made of at most a few atoms.