boil
Painful, circumscribed pus-filled inflammation of the skin and
subcutaneous tissue usually caused by a local staphylococcal infection.
Also called furuncle.

bolster
Long narrow pillow or cushion.

bombazine
Fine twilled fabric of silk and worsted or cotton, often dyed black for
mourning clothes.

boracic acid (boric acid)
Water-soluble white or colorless crystalline compound, H3BO3, used as an
antiseptic and preservative.

boutonniere
Flower or small bunch of flowers worn in a buttonhole.

bryonia
Small genus of perennial old world tendril-bearing vines (family
Cucurbitaceae) having large leaves, small flowers, and red or black
fruit; Dried root of a bryony (Bryonia alba or B. dioica) used as a
cathartic.

bubo (buboes)
An inflamed, tender swelling of a lymph node, especially in the area of
the armpit or groin, that is characteristic of bubonic plague and
syphilis.