Looked good with weapon on back of steed (7)
I believe the answer is:
glanced
'looked' is the definition.
(glancing is a kind of looking)
'good with weapon on back of steed' is the wordplay.
'good' becomes 'g' (abbreviation).
'with' says to put letters next to each other.
'weapon' becomes 'lance' (lance is a kind of weapon**).
'on' means one lot of letters go next to another.
'back of' indicates one should take the final letters.
The final letter of 'steed' is 'd'.
'g'+'lance'+'d'='GLANCED'
(Other definitions for glanced that I've seen before include "Took a quick look" , "Glimpsed" , "Peeked" , "Looked quickly" , "Looked briefly or bounced off" .)