痛
ツウ, いた.い, いた.む, いた.ましい, いた.める

pain, hurt, damage, bruise

JLPT3 G6 S12 F903

As per 甬# (run through) + 疒 illness → *pain* running all through the body → *hurt*; *ache*; *sore*; *injure*. Also, *damage*, *trying* (experience), *pitiful*, *miserable*; *tragic* and *horrible* (← painful experience), as well as *thoroughly* and *extremely* (← thoroughgoing/extreme pain).

[Full Kanji Etymology List]