canthal /ˈkæn.θəl/adjective 1noun 1forms 1 adjective1 •Pertaining to a canthus (meeting point of upper and lower eyelid).Despite the fact that he is universally fancied by almost every woman on the internet, Timothee Chalamet's negative canthal tilt would land him firmly in "prey" territory. — 2023 noun1 •Any of the scales along the upper surface of the canthus rostralis in snakes, located behind the level of the prenasal/postnasal suture and before the supraocular. formscanthals