The term "boul" is a somewhat obscure or archaic word primarily related to the Old French word "boule," which translates to "ball." The most common, though dated, usage suggests a rounded or spherical object, or a gathering formed around such an object.
The term can also denote a round or oval-shaped mass of something. It is often used to refer to a mass or collection of things in a spherical or rounded form, such as a ball of yarn, a cluster of grapes, or a rounded lump of clay.
Its figurative use might be used in connection with a group of people, like a gathering or association.
The word is rarely used in modern English but might occasionally appear in literature or historical contexts.