Looking at (5)
'looking at' is the definition.
(to eye something is to look at it)
This is all the clue.
(Other definitions for eying that I've seen before include "Interested in visual appearance" , "Watching closely" , "Looking at with interest" , "In the process of close scrutiny" , "Ogling," .)
(Other definitions for seeing that I've seen before include "Noticing" , ". . . . . . is believing, they say" , "Meeting" , "... is believing, it's said" , "Watching" .)
'looking at' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for eyeing that I've seen before include "Watching closely" , "Looking intently at" , "Looking at, staring" , "Gazing" , "Looking at, watching" .)
'looking at' is the definition.
(viewing is a kind of looking at)
This is the entire clue.
(Other definitions for viewing that I've seen before include "Surveying" , "Opportunity to see" , "What's done in front of the TV" , "people in front of TV?" .)