Artificial intelligent assistant

trefoot

ˈtrefoot Obs.
  Also 6 treifoote, 7 trifoote, treefot.
  [f. L. tres, or OF. treis three + foot. Cf. OE. trefet, trivet.]
  A three-footed object; a tripod; a trivet.

1559 W. Bavand tr. Montanus' Comm. Weale vii. i. 133 b, Thales..vnto whome..his..countreie men gaue the Golden treifoote whiche the Fisshermen had drawne vp. 1630 J. Taylor (Water P.) Wks. ii. A a j, Euery man is not borne to make a Monument for the Cuckoo; to send a Trifoote home alone. 1634 T. Johnson tr. Parey's Chirurg. xxvii. ii. (1678) 664 A Kettle, set upon a Treefot. 1651 French Distill. i. 3 A Kettle, or a Pot set upon a Trefoot.

Oxford English Dictionary

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