past tense and perfective aspect of 行く (iku) [godan]

going

to go; to come to one's place / to (a letter) be delivered / to depart / to rely (on a method) / (年が～) to age / (うまく～) to go well / イく: (slang) to have an orgasm, to come, to cum

volitional form of 行く (iku, yuku) [godan]

negative of 行く (iku, yuku) [godan]

knee socks, knee highs (a sock that reaches almost up to the knee)

knee socks, knee highs (a sock that reaches almost up to the knee)

school (institution dedicated to teaching and learning)

(literary) they (about women or girls)

knee socks that reach to above the knee