Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of jack is as below...

Jack :: "Jack (n.) A system of gearing driven by a horse power, for multiplying speed..

Straight :: Straight (superl.) Composed of cards which constitute a regular sequence, as the ace, king, queen, jack, and ten-spot; as, a straight hand; a straight flush..

Penguin :: Penguin (n.) Any bird of the order Impennes, or Ptilopteri. They are covered with short, thick feathers, almost scalelike on the wings, which are without true quills. They are unable to fly, but use their wings to aid in diving, in which they are very expert. See King penguin, under Jackass..

Jacketed :: "Jacketed (a.) Wearing, or furnished with, a jacket..

Jackass :: Jackass (n.) A conceited dolt; a perverse blockhead.

Black-jack :: Black-jack (n.) The Quercus nigra, or barren oak..

Bootjack :: Bootjack (n.) A device for pulling off boots.

Camisole :: Camisole (n.) A kind of straitjacket.

Spinet :: Spinet (n.) A keyed instrument of music resembling a harpsichord, but smaller, with one string of brass or steel wire to each note, sounded by means of leather or quill plectrums or jacks. It was formerly much used..

Water Plate :: Water plate () A plate heated by hot water contained in a double bottom or jacket.

Jack :: "Jack (n.) A familiar nickname of, or substitute for, John..

Crossjack :: Crossjack (n.) The lowest square sail, or the lower yard of the mizzenmast..

Slapjack :: Slapjack (n.) A flat batter cake cooked on a griddle; a flapjack; a griddlecake.

Black-jack :: Black-jack (n.) A large leather vessel for beer, etc..

Ketch :: Ketch (n.) A hangman. See Jack Ketch.

Pea-jacket :: Pea-jacket (n.) A thick loose woolen jacket, or coat, much worn by sailors in cold weather..

Bluefish :: Bluefish (n.) A large voracious fish (Pomatomus saitatrix), of the family Carangidae, valued as a food fish, and widely distributed on the American coast. On the New Jersey and Rhode Island coast it is called the horse mackerel, in Virginia saltwater tailor, or skipjack..

Flapjack :: Flapjack (n.) A fried dough cake containing fruit; a turnover.

Strait-laced :: Strait-jacket (n.) A dress of strong materials for restraining maniacs or those who are violently delirious. It has long sleeves, which are closed at the ends, confining the hands, and may be tied behind the back..

Runner :: Runner (n.) A food fish (Elagatis pinnulatus) of Florida and the West Indies; -- called also skipjack, shoemaker, and yellowtail. The name alludes to its rapid successive leaps from the water..

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