Though circular, it has a shallow end all right (3)
I believe the answer is:
wok
'though circular it' is the definition.
I can't judge whether this definition defines the answer.
'a shallow end all right' is the wordplay.
'end' indicates one should take the final letters.
'all right' becomes 'ok' (synonyms).
The last letter of 'shallow' is 'w'.
'w'+'ok'='WOK'
'has' is the link.
Can you help me to learn more?
(Other definitions for wok that I've seen before include "Asian cooking pan" , "pot" , "A Chinese large-bowled frying pan" , "Chinese bowl-shaped frying pan" , "Chinese cooking vessel like large bowl" .)