SIO (English, noun)
expansion: SIO (plural SIOs)
Senses:
topics: government
law-enforcement
glosses: Initialism of senior investigating officer.
tags: UK
abbreviation
alt-of
initialism
glosses: Initialism of snap-in-one.
tags: abbreviation
alt-of
initialism
slang
Forms:
form: SIOs
tags: plural