白头到老 báitóudàolǎo to grow old together Origin Definitions Defs Strokes Stroke Words Sentences Sents 白头 白頭 báitóu old age old age; used metonymically to refer to a person of advanced age到 dào preposition to used as a preposition meaning "to", "until", or "up to"老 lǎo adjective old old; aged; (of people) venerable