A dove fluttering around one, is worth watching (5)
I believe the answer is:
video
'worth watching' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'a dove fluttering around one' is the wordplay.
'fluttering' is an anagram indicator.
'around' means one lot of letters goes inside another.
'one' becomes 'i' (Roman numeral).
'dove' with letters rearranged gives 'vdeo'.
'vdeo' going around 'i' is 'VIDEO'.
'is' is the link.
Can you help me to learn more?
(Other definitions for video that I've seen before include "Recorded film cassette" , "Relating to televised images" , "(Tape for) recorder of film etc" , "YouTube media" , "TV cassette" .)