Helping (7)
'helping' is the definition.
(a ration is a serving or helping)
This is all the clue.
(Other definitions for ration that I've seen before include "Limit issue" , "Wartime allowance?" , "adequate amount" , "Limit supply in time of scarcity" , "Limit quantity as of food during scarcity" .)
'helping' is the definition.
('aid' can be a synonym of 'help')
This is the entire clue.
(Other definitions for aiding that I've seen before include "Helping, supporting" , "Giving help" , "Assisting" , "Giving assistance" , "Poet Laureate with this helping" .)
'helping' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for portion that I've seen before include "Piece of a whole" , "Helping - fate" , "Part - share" , "A lot of" , "Amount of food" .)