A good lot of help (3)

I believe the answer is:
aid
'a good' is the definition.
The answer and definition can be both human attributes as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'lot of help' is the wordplay.
'lot of' means to remove the last letter (a lot of the word but not all of it).
'help' becomes 'aide' (aide is a kind of help).
'aide' with its final letter taken away is 'AID'.
Can you help me to learn more?
(Other definitions for aid that I've seen before include "Care, assistance" , "Help or succour" , "A hand" , "technique that can produce pregnancy" , "Help. Assist" .)
