a.1.Expanding at the mouth; as, a bell-mouthed gun.
References in classic literature ?
I stood by for an instant, glorying in the thought that he could not hear me; the next, I saw what it was he was reaching up for - a bell-mouthed blunderbuss - and I knew the little devil for the impostor that he was.
The bore can become bell-mouthed, sending you to hunt down all the emery cloth in the shop, or firing up the hone.