Green’s Dictionary of Slang

string n.

1. [early 19C–1910s] a hoax, a fraud [string (along) v. (1a)].

2. [late 19C–1920s] (US Und.) a form of confidence trick.

3. in racing, the finishing line.

4. [1910s–40s] (US Und.) a fuse, as used for detonation when ‘blowing’ a safe.

5. [1920s+] (also string of ponies) a group of prostitutes working for a single pimp [SE string, a set or stud of horses].

6. [1950s+] (US) the penis; thus string and nuggets, the penis and testicles.

In compounds

stringbean (n.)

see separate entry.

string city (n.)

see separate entry.

In phrases

on the string

in pursuit, usu. amorously.

string of ponies (n.)

see sense 5 above.