Right to boot out machine (5)
I believe the answer is:
robot
'machine' is the definition.
(I've seen this before)
'right to boot out' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to' says to put letters next to each other.
'out' is an anagram indicator (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 "Mechanism that can move like a human" , "Programmed machine" , "Computer-controlled machine" , "Programmable machine" , "Automation" .)