The customary or habitual hour for eating lunch(noun)
WordNet. Princeton University. 2010.
Use "lunch period" in a sentence
"But he bought an old armchair at a fleamarket and borrowed an area rug from his landlord and every afternoon at one-ten, just after lunch period and just before language arts, Kennan sat in the sprung chair and twenty-seven children crowded into the carpeted corner and the tale resumed."