boom = żuraw, tyczka mikrofonowa

a boom mic

Source: http://www.gearslutz.com/board/remote-possibilities-acoustic-music-location-recording/468305-focus-group-mics.html

żuraw, tyczka mikrofonowa

English sentence and Polish translation

The boom was hanging over our heads during the interview. = Tyczka mikrofonowa wisiała nad naszymi głowami podczas wywiadu.