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main tent at a circus （马戏场的）主帐篷.

biddable, bidder, bidding, bide, bidet, biennial, biennially, bier, biff, bifocal, bifocals, bifurcate, bifurcation, big, big bang hypothetical, Big Brother, big business, big dipper, big end, big game, big wheel, big-head, big-hearted, bigamist, bigamous, bigamously, bigamy, bight, bigness, bigot, bigoted, bigotry, bigwig, bijou, bike, bikini, bilabial, bilateral, bilateralism, bilaterally,