In camp, a guy may be attached to her (3)
I believe the answer is:
peg
'her' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for peg that I've seen before include "Kind of pin for hanging clothes" , "Wooden pin, small marker" , "Wooden or plastic pin for hanging clothes" , "Clip for attaching clothes to line" , "Small cylindrical pin" .)