Designed for dining in as well as food preparation.(adjective)
Featuring seating to allow patrons to a stay and eat their food on site.(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "eat-in" in a sentence
"He has a small eat-in area right off the street and then a larger area in the back that is semi-open-air."
"The eat-in kitchen shown here has Formica counter tops, vinyl floors and a vintage stove."
"As a Christmas gift to lunchers, OBAO (on 53rd btw. 2+3rd) will be giving away “free lemongrass short rib skewers with purchase of any lunch entrée for the remainder of 2009 (eat-in only).”"