The Collaborative International Dictionary of English v.0.48:

Andiron \And"i`ron\, n. [OE. anderne, aunderne, aundyre, OF.
   andier, F. landier, fr. LL. andena, andela, anderia, of
   unknown origin. The Eng. was prob. confused with brand-iron,
   AS. brand-[imac]sen.]
   A utensil for supporting wood when burning in a fireplace,
   one being placed on each side; a firedog; as, a pair of
   andirons.
   [1913 Webster]

WordNet (r) 3.0 (2006):

andiron
    n 1: metal supports for logs in a fireplace; "the andirons were
         too hot to touch" [syn: andiron, firedog, dog, dog-
         iron]

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "andiron":
   chain, coal tongs, crane, crook, damper, fire hook, fire tongs,
   firedog, grate, grating, grid, griddle, gridiron, grill, griller,
   lifter, poker, pothook, salamander, spit, tongs, tripod, trivet,
   turnspit