378. bequeath : leave to someone by means of a will; hand down

　　* In his will, Father bequeathed his watch to Phillip; the bequest meant a great deal to the boy.

　　383. beset : harass; trouble

　　* Many problems beset the American public school system.

　　387. betroth : become engaged to marry

　　* The announcement that they had become betrothed surprised their friends who had not suspected any romance.

　　389. bicameral : two-chambered, as a legislative body

　　* The United States Congress is a bicameral body.

　　391. biennial : every two years

　　* The group held biennial meetings instead of annual ones.

　　392. bifurcated : divided into two branches; forked

　　* With a bifurcated branch and a piece of elastic rubber, he made a crude but effective slingshot.

　　418. boon : blessing; benefit

　　* The recent rains that filled our empty reservoirs were a boon to the whole community.

　　421. bountiful : generous; showing bounty

　　* She distributed gifts in a bountiful and gracious manner.

　　427. braggart : boaster

　　* Modest by nature, she was no braggart, preferring to let her accomplishments speak for themselves.

　　430. brazen : insolent

　　* Her brazen contempt for authority angered the officials.