plural of escalator barrel

A sharply inclined shaft or tunnel in which escalators are installed underground, particularly at underground railway stations.

(nautical) A series of evenly spaced overhand knots in a rope, which make it more secure for climbing or descending. Often used for fire escapes and jib boom foot ropes on rigged sail ships. Also known as the Philadelphia knot.

plural of fire-escape knot

(astronomy) A planetary nebula in Gemini, Milky Way Galaxy

(military) The escalation of a conflict by attacking an additional geographic region.

(military) The escalation of a conflict by using more resources or more powerful weapons.

(medicine) Mutation of a pathogen to a point where it is no longer recognized and counteracted by existing vaccines.

plural of esoteric programming language

(programming) A programming language with highly unconventional syntax or operation, designed as an experiment or as a joke rather than for the serious development of software.