Green’s Dictionary of Slang

mitten n.

1. [19C+] usu. in pl., the hand, esp. the fist.

2. [mid-19C+] (US) a rejection or dismissal; usu. in phrs. below.

3. [mid-19C+] a boxing glove; usu. in pl.; thus mitten-mill n., a prize-fight.

4. [late 19C–1930s] a handcuff; usu. in pl.

5. [1920s] (US Und.) a knuckle duster.

In compounds

mitten queen (n.) [-queen sfx (2)]

[1990s+] (US gay) a man who masturbates other men.

In phrases

get the mitten (v.)

1. [19C-1920s] (US) to be turned down as a suitor, to be rejected.

2. [mid-19C] (US campus) to be expelled from a college.

3. [late 19C] to be dismissed from employment.

give someone the mitten (v.)

[mid-19C–1900s] (US) to reject a proposal of marriage, to end a relationship.

tip someone the mitten (v.)

[late 19C] to dismiss from a job.