What is the meaning of Subwoofer?

A loudspeaker designed to produce low-frequency sound, especially subbass.

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

subwoofer (a woofer dedicated to the reproduction of low-pitched audio frequencies)

Source: wiktionary.org