an intensive examination testing a student's proficiency in some special field of knowledge
"she took her comps in English literature"
Alternative form of comp.
To accompany, in music.
"The guitarist asked his friend to comp a few chords while he played the solo."
Clipping of complimentary.
"The restaurant comped our appetizers as a welcome gesture."
In plain English: Comp means something that is comparable to another thing, often used when comparing prices or quality.
"The hotel room was very comp, with just a single bed and no TV."
A surname.
"John Comp and his wife moved to the city last summer."