A portal has satisfactory jewels (6)
I believe the answer is:
agates
'jewels' is the definition.
Although both the answer and definition are plural nouns, I can't understand how one could define the other.
'a portal has satisfactory' is the wordplay.
'portal' becomes 'gate' (I've seen this before).
'has' means one lot of letters go next to another.
'satisfactory' becomes 's' (abbreviation in education).
'a'+'gate'+'s'='AGATES'
Can you help me to learn more?
(Other definitions for agates that I've seen before include "Ornamental stones" , "Name for stones" , "Ste aga up for the stones" , "Banded semiprecious stones" , "Stones to be found in a stage" .)