It’s about time. We are now on Instagram!
(also feed cap) A peaked cap like a baseball cap, bearing the trademark or name of a manufacturer and distributed as an advertising device: She made him stop wearing his John Deere gimmie hat in public places/ a ''macho'' gimmie cap emblazoned with ''Cat'' (for Caterpillar Tractors)
[1970s+; probably fr the request ''gimme one of those!'' heard when these were available free from dealers]