Knapping-jigger, a turnpike gate; “to dub at the KNAPPING-JIGGER,” to pay money at the turnpike.

Knark, a hard-hearted or savage person. The word is now usually spelt NARK, and is applied to the lowest class of informers.

Knife, “to KNIFE a person,” to stab; an un-English custom, but a very common expression.

Knife-board, the seat running along the roof of an omnibus.

“On ’busses’ KNIFEBOARDS stretch’d,
The City clerks all tongue-protruded lay.”

Knife it, “cut it,” cease, stop, don’t proceed.

Knight, a common and ironical prefix to a man’s calling—thus, “KNIGHT of the whip,” a coachman; “KNIGHT of the thimble,” a tailor.

Knobstick, a non-society workman. One who takes work under price.

Knock about the bub, to hand or pass about the drink. Bub is a very old cant term for drink.

Knock-down, or KNOCK-ME-DOWN, strong ale.