Ceiriosen, n. a single cherry
Ceirniad, n. a hoofed animal
Ceisbwl, n. a blunt churl, a catchpoll
Ceisiad, n. an extortioner; a bailiff; a tax-gatherer
Ceisid, n. a seeking, a trying
Ceisiedydd, n. one who seeks
Ceisio, v. to seek, to attempt
Ceiswr, n. one who seeks
Ceithiwed, n. bondage
Cel, n. a shelter, a hiding