Tryst n.
1. Trust. [Obs.]
2. An appointment to meet; also, an appointed place or time of meeting; as, to keep tryst; to break tryst. [Scot. or Poetic]
To bide tryst, to wait, at the appointed time, for one with whom a tryst or engagement is made; to keep an engagement or appointment.
The tenderest-hearted maid
That ever bided tryst at village stile. --Tennyson.