expression, noun
unit of five (in tallies)
Refers to the five strokes of the kanji 正, used as a tally mark to count groups of five. Common in counting votes, scores, or items.
投票数を正の字で数える。
Count the votes using the tally mark 正.
黒板に正の字が並んでいる。
Tally marks are lined up on the blackboard.