#1 outlet n. [mercantile establishment, retail store, sales outlet] a place of business for retailing goods. wn
#2 outlet n. [wall socket, wall plug, electric outlet, electrical outlet, electric receptacle] receptacle providing a place in a wiring system where current can be taken to run electrical devices. wn
#3 outlet n. [exit, issue, way out] an opening that permits escape or release; "he blocked the way out"; "the canyon had only one issue". wn
#4 outlet n. [release, vent] activity that frees or expresses creative energy or emotion; "she had no other outlet for her feelings"; "he gave vent to his anger". wn
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