落し物
おとしもの · otoshimono · JLPT N2 · noun
property
👜 落とし (drop) + 物 (thing) = things that were dropped and found
落とす means to drop, and 物 means thing. Dropped things end up at the lost property desk, so the word is literally dropped things.
落 — grass radical 艹 + 洛 (water 氵 + 各)
Originally written with the grass radical 艹 over 洛, depicting leaves falling from plants. 洛 serves as the phonetic component (giving the luò sound) while 艹 supplies the meaning of vegetation. The sense extended from 'leaves falling' to the general meaning of falling, dropping, or settling down.