Rarely struts catwalk promoting line from the East (6)
I believe the answer is:
seldom
'rarely' is the definition.
('seldom' can be a synonym of 'rarely')
'struts catwalk promoting line from the east' is the wordplay.
I cannot really understand how this works, but
'line' could be 'el' (el is a kind of line) and 'el' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for seldom that I've seen before include "Infrequent" , "Not 21" , "Only occasionally" , "Not often, infrequently" , "Not very often, rarely" .)