Ring a bell ( help someone remember something )

Hit the book:

Beverage

Uphold

Outlet

Vending machine

Nail down

Installation

Kibosh

Transit system

Metro staff members' proposal would lift the ban on selling food and beverages while upholding the ban on consuming them inside the system. In a memo outlining the proposal, staff recommended licensing newsstands, small retail outlets and vending machines. Merchants could sell packaged food and beverages and items such as over-the-counter medicines or ear buds.