trice
Concise Oxford English Dictionary © 2008 Oxford University Press:
trice /trʌɪs/
▶noun (in phr. in a trice) very quickly.
– origin ME trice ‘a tug’ (figuratively ‘an instant’), from MDu. trīsen ‘pull sharply’, rel. to trīse ‘pulley’.
'trice' also found in these Oxford entries:

