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

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

past tense and perfective aspect of 行う (okonau) [godan]

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

negative of 行く (iku, yuku) [godan]

hypothetical and imperative forms of 行く (iku, yuku) [godan]

going

iron

iron, the metal and the metallic chemical element / (more generally) steel / short for 鉄砲 (teppō, literally “cannon”, but in this case, refers to the poisonous fugu blowfish or dishes made from it)

(slang, derogatory) disgusting (repulsive, filthy) otaku; fucking nerd