also: しょうてい
noun
able-bodied man (ritsuryō system)
Historical term for a healthy man aged 21–60 subject to corvée and taxes under the ritsuryō system.
律令制では、正丁は税や労役の負担者だった。
Under the ritsuryō system, able-bodied men bore the burden of taxes and corvée.
The term is composed of 正 (correct, regular) and 丁 (adult man), reflecting its use in the ritsuryō legal codes to designate a fully able-bodied adult male.