British slang. to touch or caress (someone), esp to arouse sexual feelings. noun touch-up, touchup.

What does it mean to touch up someone?

British slang. to touch or caress (someone), esp to arouse sexual feelings. noun touch-up, touchup.

Is it touch up or touch up?

Touch-up means the same as touchup. Usually when people begin using a phrasal verb as a noun, a hyphen is placed between the two words to show you no longer are using it as a verb; over time, as this noun becomes common in our language, the tendency is to do away with the hyphen.