'lunchtime' definitions:

Definition of 'lunchtime'

From: WordNet
noun
The customary or habitual hour for eating lunch; "he observed a regular lunchtime" [syn: lunchtime, lunch period]

Definition of 'lunchtime'

From: GCIDE
  • lunchtime \lunchtime\ n. the time for eating lunch; as, he observed a regular lunchtime. [WordNet 1.5]