Lug (knob) definition

(1) Marine worms having a row of tufted gills along each side of the back; often used for fishing bait

(2) A projecting piece that is used to lift or support or turn something

(3) A sail with four corners that is hoisted from a yard that is oblique to the mast

(4) Ancient Celtic god

(5) Carry with difficulty

"You'll have to lug this suitcase"

(6) Obstruct

"My nose is all stuffed"

"Her arteries are blocked"