込 means “crowded, into”

こむ · komu

Also: mixture, in bulk, included

Kun'yomi (Japanese reading)
こむ, こみ, こめる

JLPT N3 · Taught in secondary school · 5 strokes

The story

Moving (辶) and entering (入) at once: everyone pushing in. 込 was made in Japan, and it packs into daily life: a rush-hour train is 込んでいる, packed, and 税込, tax included, is on every price tag.

Used in 込む (komu, to be crowded), 申し込む (moushikomu, to apply), and 税込 (zeikomi, tax included)

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Readings from KANJIDIC2, © EDRDG, CC BY-SA.