chancel
  Space around the altar of a church for the clergy and sometimes the
  choir, often enclosed by a lattice or railing.

chary
  Cautious; wary; not giving or expending freely; sparing.

chelidnium
  Herbs of the poppy family (Papaveraceae) with brittle stems, yellowish
  acrid juice, pinnately divided leaves, and small yellow flowers that
  includes the celandine.  Preparation of celandine (Chelidonium majus)
  used formerly as a diuretic.

Cheviot
  Breed of sheep with short thick wool, originally raised in the Cheviot
  Hills.  Fabric of coarse twill weave, used for suits and overcoats,
  originally made of Cheviot wool.

chicken pox
  Caused by the varicella-zoster virus; indicated by skin eruptions,
  slight fever, and malaise.  Also called varicella.

chilblain
  Inflammation and itchy irritation of the hands, feet, or ears, caused by
  moist cold.

chloral hydrate
  Colorless crystalline compound, CCl3CH(Oh)2, used as a sedative and
  hypnotic.

chlorosis
  Iron-deficiency anemia, primarily of young women, indicated by
  greenish-yellow skin color.

cholera infantum
  Acute non-contagious intestinal disturbance of infants formerly common
  in congested areas with high humidity and temperature.

cholera morbus
  Acute gastroenteritis occurring in summer and autumn exhibiting severe
  cramps, diarrhea, and vomiting.  No longer in scientific use.

chorea
  Nervous disorders marked by involuntary, jerky movements, especially of
  the arms, legs, and face.

Chrysarobin
  Bitter, yellow substance in Goa powder (from the wood of a Brazilian
  tree Vataireopsis araroba), and yielding chrysophanic acid; formerly
  called chrysphanic acid.

cinchona (Jesuit’s bark, Peruvian bark)
  Trees and shrubs of the genus Cinchona, native chiefly to the Andes and
  cultivated for bark that yields the medicinal alkaloids quinine and
  quinidine, which are used to treat malaria.  Dried bark of these plants.

Cinnamyl
  Hypothetical radical, (C6H5.C2H2)2C, of cinnamic compounds.  Formerly,
  cinnamule.

clonic
  The nature of clonus—­contraction and relaxation of muscle.

cocculus
  Poisonous bean-shaped berry of a woody vine (Anamirta cocculus) of the
  East Indies that yields picrotoxin.

cochineal
  Red dye made of the dried and pulverized bodies of female cochineal
  insects.

coddle
  Cook in water below the boiling point:  coddle eggs.  Treat indulgently;
  baby; pamper.

codling (codlin)
  Greenish elongated English apple used for cooking.  Small unripe apple.

Cohosh (baneberry, herb Christopher)
  Plant of the genus Actaea having acrid poisonous berries; especially
  blue cohosh, black cohosh.