A bell consists of a large hollow piece of metal (or, rarely, some other material) and a clapper which strikes the metal and makes it ring.
Is there a word that distinguishes specifically the big, cup-shaped piece of metal that gets hit, from the instrument as a whole?
The clapper is suspended within the < word > and strikes the < word > to produce a tone.
The best I could come up with is 'bell head', but the internet gives me only "Bellhead":
(slang) A supporter of traditional centralized telecommunications networks, contrasted with nethead (a supporter of the Internet and its flexibility and technical underpinnings).