संस्‍कृतशब्‍दकोशः

उल्ब

गर्भ‚ गर्भ का अभ्यन्तर चर्म‚ शिशु के ऊपर की पोटली

womb, the bag which surrounds the embryo

Monier–Williams

उल्ब — {úlba} or {úlva} (rarely {as}, m.), n. (√{uc}, 'to accumulate' Uṇ. iv, 95##more probably fr. √1. {vṛ} BRD.), a cover, envelope, esp. the membrane surrounding the embryo RV. x, 51, 1 AV. iv, 2, 8 VS. TS. ŚBr. &c##the vulva, womb VS. xix, 76##a cave, cavity L. ; [ {alvus}, {vulva} ; Lith. {urwā}, {ū0la}.]