Bell-mouthed

a bell-mouthed gun

He perceived it to be a drawing, by some first-rate artist, of the bell-mouthed flower Calycanthus, extremely rich and elaborate, and truly worthy of its imperial destination.

Brake linings on a bell-mouthed brake drum will make contact only on the inner surface of the drum.

On a table stood a full carafe — one of those bell-mouthed Italian carafes, flanked by a black bottle.