Answer:
The edge of earth and bread.
Sally's mom has 5 children, Boby, Jimmy, Franky, Marly. Who is the last child?
What ship has no captain but two mates?
Take one royal word in the plural and make it singular by adding one letter
You roll it or you buy it, People say you shouldn't try it, Because you may get a stroke, From inhaling all that smoke.
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.