Green’s Dictionary of Slang

nipper n.2

[nip v.1 ; 20C+ use mainly US]

1. [early 19C–1920s] (US) in pl., fingers or hands.

2. [early 19C–1950s] in pl., handcuffs .

3. [late 19C–1920s] (US) in pl., pince-nez [their ‘nipping’ the bridge of the nose to gain a purchase on the face].

4. [1960s] (US campus) in pl., the female breasts.