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 hood or other device placed over a chimney or vent pipe, to prevent a back draught..

Jack :: Jack (n.) A device to pull off boots.

Jackstraw :: "Jackstraw (n.) An effigy stuffed with straw; a scarecrow; hence, a man without property or influence..

Jacket :: "Jacket (n.) In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired..

Jack :: "Jack (n.) A popular colloquial name for a sailor; -- called also Jack tar, and Jack afloat..

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..

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..

Skipjack :: Skipjack (n.) A shallow sailboat with a rectilinear or V-shaped cross section.

Jack Ketch :: "Jack Ketch () A public executioner, or hangman..

Jak :: Jak (n.) see Ils Jack.

Jack :: "Jack (n.) A large, California rock fish (Sebastodes paucispinus); -- called also boccaccio, and merou..

Sphalerite :: Sphalerite (n.) Zinc sulphide; -- called also blende, black-jack, false galena, etc. See Blende (a)..

Blende :: Blende (n.) A mineral, called also sphalerite, and by miners mock lead, false galena, and black-jack. It is a zinc sulphide, but often contains some iron. Its color is usually yellow, brown, or black, and its luster resinous..

Jack :: "Jack (n.) In the harpsichord, an intermediate piece communicating the action of the key to the quill; -- called also hopper..

Jack :: Jack (n.) A young pike; a pickerel.

Jackman :: Jackman (n.) A cream cheese.

Juppon :: "Juppon (n.) A sleeveless jacket worn over the armor in the 14th century. It fitted closely, and descended below the hips..

Minute-jack :: Minute-jack (n.) A figure which strikes the hour on the bell of some fanciful clocks; -- called also jack of the clock house.

Jack :: "Jack (n.) A coarse and cheap mediaeval coat of defense, esp. one made of leather..

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