a cloth band worn around the arm as a sign of something, for example that somebody has an official position 臂章;袖章 The stewards all wore armbands. 乘务员都戴了臂章。 Many people at the funeral service were wearing black armbands. 葬礼上许多人戴着黑纱。
either of two plastic rings that can be filled with air and worn around the arms by somebody who is learning to swim (学游泳时用的可充气)臂圈