Juggling
来自Big Physics
late Middle English (in the sense ‘entertain with jesting, tricks, etc.’): back-formation from juggler, or from Old French jogler, from Latin joculari ‘to jest’, from joculus, diminutive of jocus ‘jest’. Current senses date from the late 19th century.
wiktionary
From juggle + -ing.
From Middle English jogelyng, juglynge, equivalent to juggle + -ing.
