'main course' definitions:

Definition of 'main course'

From: WordNet
noun
The principal dish of a meal [syn: entree, main course]
noun
A square mainsail

Definition of 'main course'

From: GCIDE
  • main course \main course\ n.
  • 1. The principal part of a meal.
  • Syn: entree. [PJC]
  • 2. (Nautical) A square mainsail. [WordNet 1.5]