The state or condition of being unsustainable.

(military) Abbreviation of Military Local Service Engagement. / (mathematics) Abbreviation of maximum likelihood sequence estimation.

(Canada) A place where a north–south grid road jogs to correct for the northward convergence of meridians.

(mining) A heap of ore; a mass undergoing the process of amalgamation. / (mining, historical) A Mexican unit of weight for ore, varying from 1,800 to 3,200 Spanish pounds.