long bow
No. "Firearm" is defined basically as a small arms weapon, as a rifle or pistol, from which a projectile is fired by gunpowder. A slingshot is a weapon, but not a firearm.
A slingshot carried in a public place would be classed as an offensive weapon - so not legal.
A sling, or possibly a slingshot.
He likes to use a slingshot and rock.
He has a golden bow and arrows for his weapon.
its a weapon so yeah fire arm. "Weapon" and "firearm" are not interchangeable terms. The definition of "firearm" is basically as follows: a small arms weapon, as a rifle or pistol, from which a projectile is fired by gunpowder. So, a slingshot does not meet that definition, but it is also not a toy.
The term "bow" likely comes from the curved shape of the weapon resembling the curve of a bow (as in a bow and arrow). This term has been used for centuries to describe the weapon.
there isn't a hookshot, but there is a grappling hook in the ice temple that you have to get to get through the dungeon.
The goddess Artemis' weapon of choice would be her silver bow and arrows.
The weapon he is most often depicted with is a set of bow and arrows.
I think what you are asking about was the trebuchet, which was much more like a sling than like a slingshot. There was a type of catapult called a ballista, which was like a large crossbow, and it is possibly a similarity to this type of weapon that is the reason people in England and many other places call a slingshot a catapult.