closing time; time to leave
Refers to the time when a place (shop, office, event) closes or when it is appropriate to leave. Often used in phrases like 引け時になる or 引け時を知らせる.
The shop's closing time is 10 p.m.
終業時間 specifically means the end of the workday at a company, whereas 引け時 can be used more broadly for any situation where it's time to go.
Standard kanji spelling for 'closing time' or 'time to leave'.
Alternate kanji spelling using 退 (withdraw/retreat), less common but still seen.
Kana spelling is common in everyday writing, especially when the kanji choice is not important.
Compound of 引け (hike, the continuative form of 引く 'to pull back, withdraw') and 時 (toki/doki, 'time'). The kanji 引け時 uses 引 (pull/withdraw), while the variant 退け時 uses 退 (retreat).