込
こ.む, こ.む, こ.み, こ.み, こ.める, こみ, ごめ
crowded, mixture, in bulk, included, (kokuji)
JLPT3 G7 S5 F675
入 enter/put in + 辵 movement → *place inside* → *inclusion*; *mixture*; *crowdedness*. Also, *be intricate* (← mixture of elements), *load* (a gun) and *put one's heart into something*.
[Full Kanji Etymology List]