Braced structural members extending forward and aft of wings to carry foreplanes or tail surfaces

Usually Tail Booms, a longitudinal structure which is used on some aeroplanes in place of the fuselage to carry the tail unit.

Bank Originated Over-collateralized Mortgage Securities(a Scotiabank investment product)

Arms used to trap oil after an oil spill.

Masts or yards, lying on board in reserve.