[caul.dron] n [ME, alter. of cauderon, fr. ONF, dim. of caudiere, fr. LL caldaria, fr. fem. of L caldarius used for hot water, fr. calidus warm, fr. calere to be warm--more at lee] (14c) 1: a large kettle or boiler
2: something resembling a boiling cauldron "a ~ of intense emotions"