(archaic)Abbreviation of 事(koto, “thing, matter”).
See also
(Japanese ligatures and scribal abbreviations) 〆(shime), 𪜈(tomo), ゟ(yori), ヿ(koto), 𬼀(shite), 〼(masu), ヶ(“graphical abbreviation for 箇”), 々(“iteration mark”), ゝ(“iteration mark for hiragana”), ヽ(“iteration mark for katakana”)