(ǒu) a pair; a mate; a couple; to couple; plowshare
(ǒuhé) coupling (physics); copula (statistics); to be coupled (with sth)
(ǒuyuán) The Couple's Retreat Garden in Suzhou, Jiangsu
(ǒujū) to live together (as husband and wife)
(ǒuliánjīngtǐguǎn) coupled transistor (electronics)
(ǒuyǔ) to have a tete-à-tete; to whisper to each other