RF
noun
RareNot in standard dictionaries
1
Initialism of right foot.
2
Initialism of rangefinder.
3
Initialism of radio frequency.
4
Initialism of rheumatoid factor.
5
Initialism of ratfuck (“dirty rick or act of sabotage or interference”).
6
Initialism of right field or right fielder.
7
Abbreviation of radiance field.
#slang