chillum /ˈt͡ʃɪləm/ noun2 •A conical pipe used for smoking marijuana, usually made of fired clay, porcelain, soapstone, glass or, more rarely, wood.He could not think of moving till his baggage was cleared, or of travelling until he could do so with his chillum. — 1847 •The part of such a pipe that contains the tobacco and charcoal balls. formschillums