an arrangement in which each one of a group of friends or colleagues buys a small Christmas gift for one other. The person receiving the gift does not know who chose it. Each person can spend up to £10 in the office Secret Santa. 每个人在秘密圣诞老人的办公室最多可以花10英镑。 She got his name in the office Secret Santa and she knew nothing about the guy. 她在办公室的“秘密圣诞老人”（Secret Santa）中获得了他的名字，而她对此一无所知。