carillon (n.) Look up carillon at Dictionary.com
1775, from French carillon, which, according to French sources, is from Old French carignon "set of four bells," an alteration of quarregon, from Vulgar Latin *quadrinionem, from Latin quaternionem "set of four," from quater "four times," from PIE *kwetrus, from root *kwetwer- "four" (see four).