Misc: The name of which musical instrument means "sound of wood"?

Questions

Last name of the man who created famous jeweled & enameled eggs?

Lateral line & dorsal fin are parts of a(n) ________?

Latin for "time" is?

Leading Arab astronomer & mathematician of his time?

Leaks can be costly. A leak of only one drop per second wastes about ___ ________ litres of water per year?