1.寄出,寄走(信或包裹) When you send off a letter or package, you send it somewhere by post.
2.将(足球运动员)罚下场 If a football player is sent off, the referee makes them leave the field during a game, as a punishment for seriously breaking the rules.
英英释义
1.transfer
e.g. The spy sent the classified information off to Russia