<p><strong>Verb (used with object)</strong></p><ul><li>to attack or batter with artillery fire.</li><li>to attack with bombs.</li><li>to assail vigorously: to bombard the speaker with questions.</li><li>to direct high energy particles or radiations against: to bombard a nucleus.</li></ul><p><strong>Noun</strong></p><ul><li>the earliest kind of cannon, originally throwing stone balls.</li><li>Nautical. bomb ketch.</li><li>an English leather tankard of the 18th century and earlier, similar to but larger than a blackjack.</li><li>Obsolete. a leather jug.</li></ul>