(1):

(n.) Trust.

(2):

(n.) To agree with to meet at a certain place; to make an appointment with.

(3):

(n.) To trust.

(4):

(n.) An appointment to meet; also, an appointed place or time of meeting; as, to keep tryst; to break tryst.

(5):

(v. i.) To mutually agree to meet at a certain place.