blockage consisting of an object designed to fill a hole tightly

a wad of something chewable as tobacco

blatant or sensational promotion

electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark

an electrical device with two or three pins that is inserted in a socket to make an electrical connection

an upright hydrant for drawing water to use in fighting a fire

an old or over-worked horse

fill or close tightly with or as if with a plug

persist in working hard

deliver a quick blow to

make a plug for; praise the qualities or in order to sell or promote

insert a plug into

insert as a plug

work doggedly or persistently

persist in working hard

a fuse with a thread that screws into a socket

a felt hat that is round and hard with a narrow brim

plug into an outlet

plug into an outlet

a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities

someone who bullies weaker people

telephone central where circuits are completed with patchcords

(of a coin) altered by the insertion of a plug of base metal

completely obstructed or closed off

someone who is an active supporter and advocate

a hole into which a plug fits (especially a hole where water drains away)