Middle English teyntour, tentour, tenture, probably borrowed from Medieval Latin tentÅrium "tent, tabernacle, canopy, frame for stretching skins or cloth," going back to Latin, "shelter made of skins or cloth, tent," from ten-, stem in nominal derivation of tendere "to extend outward, stretch" + -tÅrium, suffix of places, from neuter of -tÅrius, deverbal adjective suffix â more at tender entry 3