SHIMMER, SHIMMERING
NOUNS
► RACE the shimmering appearance of rising air on a hot day, esp. over the brow of a slope → 1929 Sc.
► SUMMER COLTS a shimmering haze seen just above the ground on a hot day → 1686 orig. & chiefly Sc. & Eng. dial.
VERBS
► SKIMMER to shimmer, to glitter, to gleam → c1440
Lexicophilia 