Right to boot out a machine (5)
I believe the answer is:
robot
'a machine' is the definition.
(I know that robot is a type of machine)
'right to boot out' is the wordplay.
'right' becomes 'r' (abbreviation).
'to' says to put letters next to each other.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'boot' with letters rearranged gives 'obot'.
'r'+'obot'='ROBOT'
(Other definitions for robot that I've seen before include "Man-made man - man-made machine" , "performer lacking emotion" , "Computer-controlled machine" , "programmed servant" , "Automatic machine" .)