Giant considered mortal (9)

I believe the answer is:
trolleyed
'mortal' is the definition.
Although both the answer and definition are nouns, they are not in the same form of the noun.
'giant considered' is the wordplay.
'giant' becomes 'troll' (I've seen this before).
'considered' becomes 'eyed' (I've seen this in another clue).
'troll'+'eyed'='TROLLEYED'
Can you help me to learn more?
(Other definitions for trolleyed that I've seen before include "Travelled on a wheeled bed" , "Legless" , "wrecked" , "Quite intoxicated" .)
