一、用來指人

All the workers want a pay increase，every man Jack of them.

全體工人無一例外地要求增加工資。

every man Jack 或every Jack one是“每個人”、“人人”的意思。

Jack of all trades and master of none

萬事皆通而一無所長的人

a Jack on both sides

模棱兩可，兩面派

Jack at a pinch

臨時拉來幫忙的人

All work and no play makes Jack a dull boy.

諺：只工作不玩，聰明的孩子也會變傻。

All shall be well，Jack shall have Jill.

諺：有情人終成著屬。

Jack among the maids

討好女人的男子

Jack would be a gentleman if he had money.

諺：低微的人有錢也會成為紳士。

Jack is as good as his master.

諺：伙計不比老板差，卑賤者未必不如高貴者。

Jack in the water

碼頭打雜工

Cheap Jack

賣廉價貨物的小販

a Jack in office

自命不凡的小官吏，官僚

Jack the lad

（青少年幫派中的）頭號人物

二、指物

His elder brother died of Yellow Jack in the West Indies.

Yellow Jack指醫學上的“黃熱病”

the Union Jack

英聯合王國國旗

Jacks are common to all that will play.

諺：樂器對于所有想要彈奏的人都一樣。Jacks是古時類似鋼琴的彈奏樂器。

a Jack of straw

稻草人

to make one's Jack

賺很多錢