Boxing
来自Big Physics
late Old English, probably from late Latin buxis, from Latin pyxis ‘boxwood box’, from Greek puxos (see box3).
wiktionary
From box(“to punch”) + -ing.
From box + -ing.
etymonline
boxing (n.)
"fighting with the fists as a sport," 1711, verbal noun from box (v.2). Boxing glove "padded glove used in sparring" is from 1805.