1. [early 18C–mid-19C] (UK Und.) a sovereign, a guinea [SE strike, to mint a coin].
2. [late 19C–1900s] a watch [SE strike, to ring the time].
3. [1900s–50s] (US) a failure to seduce [baseball imagery].
4. [1910s+] (US Und.) an arrest and the prison sentence that follows; thus two strikes, two terms in prison; three strikes, three arrests and the mandatory life sentence that follows in many states [baseball imagery, three strikes and you’re out].
5. [1930s–50s] (US) any position of weakness [baseball imagery].
6. [1970s] (US prison) a disciplinary charge [baseball imagery].
SE in slang uses
[1920s] (US) a woman who takes advantage of a temporary estrangement to date the male of a couple.
[mid-19C+] to be lucky, to be successful.
[late 19C–1940s] (US) to do well, to succeed.