severe neurological disturbances if inhaled.

crepe de Chine
Silk crepe used for dresses and blouses.

cretonne
Heavy unglazed cotton, linen, or rayon fabric, colorfully printed and
used for draperies and slipcovers.

croton oil
Brownish-yellow, foul-smelling oil from the seeds of a tropical Asian
shrub or small tree (Croton tiglium); formerly used as a drastic
purgative and counterirritant. Its use was discontinued because of its
toxicity.

croup
Condition of the larynx, especially in infants and children, causing
respiratory difficulty and a hoarse, brassy cough.

Culver's root
Perennial herb (Veronicastrum virginicum) native to eastern North
America; the root was formerly used as a cathartic and an emetic.

cupping
Therapeutic procedure, no longer in use; an evacuated glass cup is
applied to the skin to draw blood to the surface.

Cuprum
Copper.