n. & v.
n. 1 (in full creosote oil) a dark-brown oil distilled from coal tar, used as a wood-preservative. 2 a colourless oily fluid distilled from wood tar, used as an antiseptic.
v.tr. treat with creosote.
[ G Kreosote f. Gk kreas flesh + soter preserver, with ref. to its antiseptic properties ]