1. [late 18C–1910s] to drink.
2. in the context of falling or knocking.
(a) [late 18C+] to cause to fall; thus spilled/spilt adj.
(b) [mid-19C–1920s] to knock down in a fight.
(c) [1910s] to crash.
(d) [1930s] (US Und.) to take advantage of, to ‘knock over’.
(e) [1980s+] (US campus) to fall.
3. (also spill it) in the context of speech.
(a) [early 19C] (UK Und.) to betray a confederate.
(b) [20C+] (orig. US , also spill out) to admit, to confess.
(c) [20C+] (also spill off) to tell, to recount.
4. [1920s] (US Und.) to release from prison.
[1920s+] to concoct a smooth patter with the specific aim of seduction; also ironic use.
1. see sense 3 above.
2. see spill one’s guts
1. [1910s+] (orig. US) to confess one’s crimes in full; to tell all.
2. [1940s+] (also spill it) to vomit, esp. as the result of drinking.
3. [1950s+] to speak out, forcefully; to lose one’s temper.
4. [1950s+] to divulge intimacies of one’s personal life.
[1930s+] to confess, to make an admission.
see sense 3c above.
see sense 3b above.
[1940s] (US) to shoot dead.
1. [1900s–10s] to cause a disaster.
2. [1910s+] (orig. US) to confess, to let out a secret, to talk unguardedly.
SE in slang uses
[mid-19C] (US) illicitly distilled whiskey.
see sling ink under ink n.