a light midday meal between breakfast and dinner; luncheon.

any light meal or snack.

a restaurant or lunchroom

Let's eat at the dairy lunch.

to eat lunch

We lunched quite late today.

to provide lunch for

They lunched us in regal fashion.

out to lunch

Slang . not paying attention or tending to business; negligent

You must have been out to lunch when you wrote that weird report.

noun

luncheon , refection , tiffin