1. as a bodily function.
(a) [late 16C–mid-18C] (also the squirts) as the squirt, diarrhoea.
(b) [20C+] (orig. US) ejaculation; semen.
(c) [1960s] (Aus.) an act of vomiting.
(d) [1960s+] an act of urination.
2. as a person, usu. derog.
(a) [early 18C; mid-19C+] (orig. US) a dandy, a fop.
(b) [mid-19C+] (also pop-squirt) a small, insignificant person or, occas., place or thing.
(c) [1920s] a general insult, irrespective of size.
3. [mid-19C] (US campus) a showy recitation.
4. [mid-19C] champagne [it squirts from the bottle].
5. [mid–late 19C] a doctor, a chemist [their use of syringes].
6. in context of weaponry.
(a) [mid-19C–1950s] (later use mainly Aus.) a revolver; also attrib. [it squirts bullets].
(b) [1910s] (Aus.) a bayonet.
(c) [1950s] gunfire.
7. [mid-19C; 1920s+] very cheap but still effective beer [it squirts from the beer-tap].
8. [1960s] (N.Z.) petrol [it squirts from the pump].
9. [2000s] (US drugs) an injectable narcotic.
[mid-19C] (US campus) ostentatious.
[1920s+] drinking the cheapest forms of alcohol for intoxication’s sake alone.
[1980s] a water pistol.
[late 19C] to have intercourse.
[1910s] (US) an important figure, a manager.
[2000s] (Aus.) out drinking.
[1990s+] (US) masturbation; thus play squirt ’n’ spurt v., to masturbate.
[late l7C–early 19C] diarrhoea.