WEE-WEE Meaning of WEE-WEE in English n. & v. esp. Brit. sl. --n. 1. the act or an instance of urinating. 2 urine. --v.intr. (-wees, -weed) urinate. Etymology: 20th c.: orig. unkn. Oxford English vocab. Оксфордский английский словарь. 2012