The term BELFRY SOUND is composed of six words, each with a different number of letters. The first word is KNELL, which is a noun meaning a solemn sound made by a bell, usually to announce a death or a funeral. The second word is RING, which is a verb meaning to make a sound like a bell. The third word is PEAL, which is a noun meaning a series of bells rung in succession. The fourth word is BATS, which is a noun meaning a nocturnal mammal that uses echolocation to navigate. The fifth word is BAT, which is a noun meaning a small, nocturnal mammal related to the BATS. The sixth word is CHIME, which is a verb meaning to make a ringing sound like a bell. All together, these words describe the sound of bells ringing in a belfry.