1.
If someone fits another person up, they try to make it seem that that person is responsible for a crime. (BRIT INFORMAL)
Mr Stone said inmates who had given evidence were trying to ‘fit him up’...
There can never be any legitimate basis for police officers to ~ suspects they ‘know’ to be guilty.
= frame
PHRASAL VERB: V n P, V P n (not pron)
2.
see also fit out