1.
first thing in the afternoon; right after lunch
the earliest time slot in the afternoon, typically meaning 1 PM or immediately after the lunch break
午後一で会議がある。
There's a meeting first thing in the afternoon.
午後一の打ち合わせに間に合うように戻る。
I'll be back in time for the 1 PM meeting.
昼休み明けの午後一は眠くなりがちだ。
You tend to get sleepy right after lunch when the afternoon starts.
Colloquial abbreviation of 午後一番 (first thing in the afternoon). Very common in workplace Japanese for scheduling. The 一 here means "first" (as in the first slot), not literally 1 o'clock, though in practice it usually means around 1 PM or 13:00. Follows the same pattern as 朝一 (first thing in the morning).
COMMON COLLOCATIONS:
- 午後一で: first thing in the afternoon
- 午後一の会議: afternoon's first meeting
- 午後一に入る: to start in the early afternoon
SIMILAR WORDS:
- 朝一: first thing in the morning — the same pattern for the morning
- 午後一番: first thing in the afternoon — the full, unabbreviated form
- 昼過ぎ: early afternoon — a more general term for after noon