triv·et 
(trĭvĭt)
(trĭvĭt)n.
1.
a. A metal stand with short feet, used under a hot dish on a table.
b. A usually raised plate of ceramic, wood, or another material that serves a similar purpose.
2. A three-legged stand made of metal, used for supporting cooking vessels in a hearth.
[Middle English trevet, stand for cooking vessels, from Old English trefet, probably alteration (influenced by Old English thrifēte, three-footed) of Latin tripēs, triped- : tri-, tri- + pēs, foot; see ped- in the Appendix of Indo-European roots.]
trivet