meal ticket

Noun meal ticket has 2 senses

• meal ticket(n = noun.possession) - a source of income or livelihood;
is a kind of bread and butter, keep, livelihood, living, support, sustenance

• meal ticket(n = noun.communication) luncheon voucher - coupon redeemable at a restaurant and entitling the holder to a meal;
is a kind of coupon, voucher