Word origin
 [1840–50; perh. ‹ Dhurga (Australian Aboriginal language spoken on the New South Walescoast, from Jervis Bay to Bermagui) 
yara- teeth + 
-may n. suffix; borrowed into Australian pidgins, used by white settlers, thence intoother Aboriginal languages
]This word is first recorded in the period 1840–50. Other words that entered Englishat around the same time include: bypass, colloid, flan, organizer, plaque