Share 'A simple definition of "zines"?'

My arts collective found an old spinning book rack and we're going to fill it up with zines from our distro and make a nice sign for the top and pitch it to some of the local businesses to see if they'd be interested in trying to sell some zines in their store.   The top sign is going to have the name of our distro on one side and a short definition on the reverse but we're finding it hard to set…