To escape from prison.

(Britain, slang) An irresponsible young man, seeking personal pleasure and gratification without any regard to responsibilities. A rogue.

Alternative spelling of jack of all trades

(Canada, US) A glass jar with a screw top, often used for preserving food.

(mineralogy) A pyroxene mineral, a sodium aluminium silicate with the chemical formula Na(Al,Fe³⁺)Si₂O₆, found in metamorphic rocks.

Alternative spelling of singjay

Alternative spelling of logjam

(usually plural) One of the pieces used for the game called jackstraws or pick-up sticks. / (dated) An insignificant person.

Resembling a bundle of jackstraws that has been strewn on a surface. / (obsolete, of a person) Of no substance or worth.

Fabric woven on a Jacquard loom. / Fabric resembling a jacquard, but woven by a different process. / (countable) A Jacquard loom.