Within (4)
'within' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for inside that I've seen before include "Middle" , "being held" , "Interior - in prison" , "undercover" , "Indoors" .)
'within' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for amid that I've seen before include "A dim sort of preposition" , "In the centre of" , "In the course of" , "Amongst" , "Surrounded by" .)
(Other definitions for internal that I've seen before include "Located inside" , "Interior" , "Within the body" , "Located inward" , "Cause of engine power" .)
(Other definitions for indoors that I've seen before include "Inside a building" , "Within house" , "Within the four walls" , "Having returned to pavilion" , "Not outside" .)