suppository
Concise Oxford English Dictionary © 2008 Oxford University Press:
suppository/səˈpɒzətri/
▶noun (pl. suppositories) a solid medical preparation in a conical or cylindrical shape, designed to dissolve after insertion into the rectum or vagina.
– origin ME: from med. L. suppositorium, neut. of late L. suppositorius ‘placed underneath’.
'suppository' also found in these Oxford entries:

