assignation /ˌæsɪɡˈneɪʃən/

• 1. 

  N-COUNT An assignation is a secret meeting with someone, especially with a lover. (与情人的)幽会 [正式] [oft N 'with' n]

  例：

  She had an assignation with her boyfriend.

  她和她男友幽会了一次。