From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
having a leak /hˌavɪŋ ɐ lˈiːk/
pinkelnd, schiffend, pullernd, strullend, strunzend, pieselnd, bieselnd, seichend, pischend, wiescherlnd, mal für kleine Jungs/Mädchen müssend, klein machend, Pipi machend, Lulu machend, abliternd, pissend, brunzend
Synonyms: peing, piddling, tinkling, weing, pissing, taking a leak, take/having a slash
see: pee, take a pee, have a pee, piddle, tinkle, have/take a tinkle, wee, wee-wee, do wee-wee, piss, take a leak, have a leak, take/have a slash, take a piddle, peed, piddled, tinkled, weed, pissed, taken a leak, had a leak, taken/had a slash, go tinkle, go for a slash