当とう代だい一いちMeaningsNounNo-adjective1. best of one's time; greatest of the age; peerless; unmatchedKanji used当hit (the target)代substitute一oneComposed of当とう代だいthe present age; these days; (present) head of the familyNoun一いちone; 1; best; first; foremost; beginning; start; a (single); one (of many); ace; …Numeric