wee-wee /ˈwiːwiː/noun 4verb 1forms 4 noun4 •(UK, informal) Urine. •(UK, informal) An act of urination. •(US, slang) The penis.“I agree he’s gorgeous,” said his friend, “but someone told me he has the smallest wee-wee in New York.” — 1978 •(UK, slang) The vulva or vagina.‘Wee wee’ was the word my parent’s taught me to call my vagina. — 2016 verb1 •(informal) to urinate formswee-weed · wee-weeing · wee-wees · wee wees