verb
booms; boomed; booming
[no obj] :to make a deep and loud sound
[+ obj] :to say (something) in a deep and loud voice
[no obj] of a business or industry :to grow or expand suddenly
noun
plural booms
[count] a deep and loud sound or cry
a rapid increase in growth or economic success
noun
plural booms
[count] a long pole attached to the bottom of a sailboat's sail
a long pole used to hold a microphone in position from a distance
a floating barrier used on a river, lake, or harbor to catch floating objects, to keep boats from entering, or to prevent an oil spill from spreading