estivate (v.)

also aestivate, "to spend the summer," 1620s, from Latin aestivatus, past participle of aestivare "reside during the summer" from aestus "heat," aestas "summer," literally "the hot season," from Proto-Italic *aissat-, from PIE *eidh- "to burn" (see edifice). Related: Estivated; estivating; estivation.