雨垂れ
あまだれ raindrops (dripping from eaves, branches, etc.)
Why it means this
雨 (rain) + 垂れ (dripping) — raindrops dripping from the eaves; 雨垂れ石を穿つ, constant dripping wears the stone (perseverance).
Breakdown
Each character links to its full entry — origin story, stroke order, and readings.