Where one may eat food providing calcium and iron (4)
I believe the answer is:
cafe
'where one may eat food' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'calcium and iron' is the wordplay.
'calcium' becomes 'Ca' (Ca is the chemical symbol for calcium).
'and' says to put letters next to each other.
'iron' becomes 'Fe' (Fe is the chemical symbol for iron).
'ca'+'fe'='CAFE'
'providing' is the link.
Can you help me to learn more?
(Other definitions for cafe that I've seen before include "that users might scoff at" , "Small informal restaurant" , "Small tea shop or restaurant" , "in which one had a meal?" , "Small eating place" .)