What slang term for a guinea was common name cannons and loud guns?

The slang term for a guinea that was commonly associated with cannons and loud guns is "brass". This slang originated from the fact that cannons and guns were traditionally made of brass.

Here are some other slang terms for "guinea" that relate to money:

* "Dough"

* "Cash"

* "Loot"

* "Bread"

* "Scran" (British slang)

* "Moolah"

However, it's important to note that using these terms in the context of cannons and loud guns is not common. The association with "brass" is more specific to the material used in those weapons.