老大 lǎodà HSK7 eldest child Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: old age All meanings 6 lǎodà 6 eldest child 2very 2boss 1old age 1 1 sentence for 老大 (lǎodà — old age) 少壮不努力,老大徒伤悲。 shàozhuàng bù nǔlì, lǎodà tú shāngbēi. If one does not work hard in youth, one will grieve in vain in old age. Source: Dong Chinese Dictionary