A picnic meal, sandwiches or anything packed and intended to be eaten away from home.

A working lunch at which important discussions may be held, and important decisions made.

(US, dated, chiefly eastern Pennsylvania) A lunchbox.

The time of day at which lunch is eaten.

(informal) The consumption of alcohol with no (or little) food at lunchtime

Lunch where business is discussed, which can be written off as a business expense.

(idiomatic) Something obtained without any payment, obligation or effort.

(US) A dinner lady.

plural of lunch-time

Alternative spelling of ploughman's lunch