第一線
だいいっせん the front (of a battlefield); forefront
Why it means this
第一 (the first) + 線 (a line) — the front line; the forefront of a field (第一線を退く).
Breakdown
Each character links to its full entry — origin story, stroke order, and readings.
だいいっせん the front (of a battlefield); forefront
第一 (the first) + 線 (a line) — the front line; the forefront of a field (第一線を退く).
Each character links to its full entry — origin story, stroke order, and readings.