Etymology: Dutch, from Middle Dutch plugge; akin to Middle High German pfloc plug
Date: 1606
1 a: a piece used to fill a hole :stopperb: an obtruding or obstructing mass of material resembling a stopper 2: a flat compressed cake of tobacco 3: a small core or segment removed from a larger object 4: something inferior; especially: an inferior often aged or unsound horse 5 a:hydrant, fireplugb:spark plug 6: an artificial fishing lure used primarily for casting and made with one or more sets of gang hooks 7: any of various devices resembling or functioning like a plug: as a: a male fitting for making an electrical connection to a live circuit by insertion in a receptacle (as an outlet) b: a device for connecting electric wires to a jack 8: a piece of favorable publicity or a favorable mention usually incorporated in general matter