CHRYSOPOEIA, alchemy.
CHRYSOSPERM, ways of producing gold.
CIBATION, adding fresh substances to supply the waste of evaporation.
CIMICI, bugs.
CINOPER, cinnabar.
CIOPPINI, chopine, lady's high shoe.
CIRCLING BOY, "a species of roarer; one who in some way drew a man into a snare, to cheat or rob him" (Nares).
CIRCUMSTANCE, circumlocution, beating about the bush; ceremony, everything pertaining to a certain condition; detail, particular.
CITRONISE, turn citron colour.
CITTERN, kind of guitar.