速そく達たつ郵ゆう便びんMeaningsNoun1. special delivery mail; express delivery postKanji used速fast達accomplished郵mail便conveniencePitch accentそくたつゆうびんComposed of速そく達たつexpress; special deliveryNoun郵ゆう便びんmail service; postal service; mail; post; postal matter; postal itemsNoun