J

[Jack]

See:

[ALL WORK AND NO PLAY MAKES JACK A DULL BOY].

[jack] See: EVERY LAST MAN also EVERY MAN JACK.

[jack of all trades] {n.}, {informal}

(Often followed by the words "master of none.")

A person who is knowledgeable in many areas. Can be used as praise, or as a derogatory remark depending on the context and the intonation.

* /Peter is a jack of all ...

[jackpot]

See: [HIT THE JACKPOT].

[jack-rabbit start] {n.}, {informal}

A very sudden start from a still position; a very fast start from a stop.

/Bob made a jack-rabbit start when the traffic light turned green./

[Jack Robinson] See: BEFORE ONE CAN SAY JACK ROBINSON.

[jack up] {v.}

1. To lift with a jack.

/The man jacked up his car to fit a flat tire./

2. {informal} To make (a price) higher; raise.

/Just before Christmas, some stores jack up their prices./

[jailbait] {n.}, {slang}

A girl below the legal age of consent for sex; one who tempts you to intimacy which is punishable by imprisonment.

/Stay away from Arabella, she is a jailbait./

[jailbird] {n.}, {informal} A convict; someone who is in jail or has been recently released from prison.

/Because Harry was a jailbird, it was understandably hard for him to find a job after being imprisoned./

[jake flake] {n.}, {slang}

A boring person whose company is usually not wanted.

/Please don't invite Turner, he is a jake flake./