1. To cry with a hollow note; to make a hollow sound, as the bittern, and some insects. At eve the beetle boometh Athwart the thicket lone. Tennyson.

2. To make a hollow sound, as of waves or cannon. Alarm guns booming through the night air. W. Irving.

3. To rush with violence and noise, as a ship under a press of sail, before a free wind. She comes booming down before it. Totten.

4. To have a rapid growth in market value or in popular favor; to go on rushingly.

BOOM
Boom, n.

1. A hollow roar, as of waves or cannon; also, the hollow cry of the bittern; a booming.

2. A strong and extensive advance, with more or less noisy excitement; — applied colloquially or humorously to market prices, the demand for stocks or commodities and to political chances of aspirants to office; as, a boom in the stock market; a boom in coffee. [Colloq. U. S.]

BOOM
Boom, v. t.

Defn: To cause to advance rapidly in price; as, to boom railroad or mining shares; to create a "boom" for; as to boom Mr. C. for senator. [Colloq. U. S.]

BOOMDAS
Boom"das, n. Etym: [D. boom tree + das badger.] (Zoöl.)