At table, one making clamour for a half of beer (5)
I believe the answer is:
diner
'at table one' is the definition.
I can't judge whether this defines the answer.
'clamour for a half of beer' is the wordplay.
'clamour' becomes 'din' (I've seen this before**).
'for' says to put letters next to each other.
'a half of' means to take half the letters.
'beer' cut in half is 'er'.
'din'+'er'='DINER'
'making' is the link.
Can you help me to learn more?
(Other definitions for diner that I've seen before include "US eatery" , "Small US restaurant" , "Eater" , "US cafe" , "One eating a meal" .)