Meaning of “fray” - Learner’s Dictionary

fray

verb uk us /freɪ/
CLOTH [ I, T ]

If material or clothing frays, or if it is frayed, the threads at the edge break and become loose.

ANNOYED [ I ]

If your temper (= mood) frays or your nerves fray, you gradually become annoyed or upset:

After hours of waiting, tempers were beginning to fray.

(Definition of “fray verb” from the Cambridge Learner’s Dictionary © Cambridge University Press)