A selective service class denoting that the registrant is available for service in the military

plural of 1-A

Alternative spelling of 911

(uncommon) Alternative spelling of 911

(rare) Alternative spelling of 911

(Canada, US, telephony) Alternative form of 411

(US, colloquial) A restriction on air travel in the United States, such that passengers may carry liquids on board as long as they are in 3.4-ounce containers that fit in a single 1-quart bag.

(Canada, US, telephony) Alternative form of 811

(Canada, US) A toll-free number or a long-distance telephone numbers; using any of North American toll-free area codes 800, 888, 877, 866, 855, 844 or 833.

(military, historical) An early cruise missile, powered by a pulsejet, used by Germany in the Second World War.