What is Jacking?

Jacking definition and meaning on Dictionary terms:
any of various portable devices for raising or lifting heavy objects short heights, using various mechanical, pneumatic, or hydraulic methods.
Also called knave. Cards. a playing card bearing the picture of a soldier or servant.
Electricity. a connecting device in an electrical circuit designed for the insertion of a plug.

(initial capital letter) Informal. fellow; buddy; man (usually used in addressing a stranger): Hey, Jack, which way to Jersey?
Also called jackstone. Games. one of a set of small metal objects having six prongs, used in the game of jacks. one of any other set of objects, as pebbles, stones, etc., used in the game of jacks.jacks,(used with a singular verb) a children’s game in which small metal objects, stones, pebbles, or the like, are tossed, caught, and moved on the ground in a number of prescribed ways, usually while bouncing a rubber ball.

any of several carangid fishes, especially of the genus Caranx, as C. hippos (crevalle jack or jack crevalle), of the western Atlantic Ocean.
Slang. money: He won a lot of jack at the races.
Slang: Vulgar. jack shit.
Nautical. a small flag flown at the jack staff of a ship, bearing a distinctive design usually symbolizing the nationality of the vessel.Also called jack crosstree. either of a pair of crosstrees at the head of a topgallant mast, used to hold royal shrouds away from the mast.

(initial capital letter) a sailor.
a lumberjack.
jack rabbit.
a jackass.
a device for turning a spit.
a small wooden rod in the mechanism of a harpsichord, spinet, or virginal that rises when the key is depressed and causes the attached plectrum to strike the string.
Lawn Bowling. a small, usually white bowl or ball used as a mark for the bowlers to aim at.
Also called clock jack. Horology. a mechanical figure that strikes a clock bell.
a premigratory young male salmon.
Theater. brace jack.
Falconry. the male of a kestrel, hobby, or especially of a merlin.

verb (used with object)
to lift or move (something) with or as if with a jack (usually followed by up): to jack a car up to change a flat tire.
Informal. to increase, raise, or accelerate (prices, wages, speed, etc.) (usually followed by up).

Informal. to boost the morale of; encourage (usually followed by up).
Slang. to mess up, ruin, or injure (usually followed by up): The paint job was all jacked up.I jacked my shoulder when I fell.
to jacklight.

verb (used without object)
to jacklight.

Carpentry. having a height or length less than that of most of the others in a structure; cripple: jack rafter; jack truss.

Verb Phrases
jack off, Slang: Vulgar. to masturbate.



reference: https://www.dictionary.com/browse/jacking