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Comprehensive
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BM abbreviation of "bowel movement," the evacuation of waste matter from the bowels.
BMOC abbreviation of "big man on campus" (used to characterize a popular or admired male student, or sometimes one who aggressively promotes his own advancement).
BMX abbreviation of "bicycle motocross," a sport in which bicycles designed for rough terrain are raced on such terrain, or used in the performance of athletic feats such as jumps, spins, and flips. [2 definitions]
B.O. abbreviation of "body odor."
boa see "boa constrictor." [2 definitions]
boa constrictor a large nonpoisonous snake native to the American tropics that is pale brown with darker markings and that coils around and crushes its prey.
boar an uncastrated male pig. [3 definitions]
board a flat, cut piece of lumber; plank. [9 definitions]
boarder a person who is housed and supplied with meals.
board foot a unit of measure for lumber, equal to one foot square and one inch thick.
board game any game, such as chess or backgammon, in which pieces are moved on a specially marked board.
boardinghouse a residence that provides rooms and meals to paying lodgers.
boarding school an elementary or secondary school at which the students live as well as take classes.
board of education an appointed or elected group that supervises one or several school systems at the town, city, county, or state level; school board.
board of health a department of municipal, county, or state government that supervises public health and sanitation.
boardroom a room where a board of administrators or directors holds meetings.
boardwalk a walkway built of wooden boards, esp. a promenade at a beach.
boast to talk with an excess of pride, esp. about oneself; brag. [5 definitions]
boastful tending to boast or characterized by boasting.
boat a small, open vehicle for traveling on the surface of the water. [4 definitions]
boathouse a small building or shed built near or partly over the water's edge, and used to store boats.