noun
a room used for dining (Freq. 6)
• Syn: ↑dining-room
• Hypernyms: ↑room
• Hyponyms: ↑dining-hall, ↑mess, ↑mess hall, ↑triclinium
• Part Holonyms: ↑dwelling, ↑home, ↑domicile, ↑abode, ↑habitation, ↑dwelling house
• Part Meronyms: ↑buffet, ↑counter, ↑sideboard, ↑dining-room table
* * *
noun, pl ⋯ rooms [count]
: a room that is used for eating meals
* * *
a room that is used mainly for eating meals in 
Example Bank:
•
The dining room seats up to 60 guests.
•
a comfortable dining room serving just-caught seafood
•
a cosy dining room serving excellent home-prepared cooking
Useful english dictionary. 2012.