Hull (noun)

1. The outer protective covering of a seed, nut, or ship.
2. The frame or body of a ship, excluding its superstructure and equipment.

Origin:

Derived from the old english word hulu, meaning 'outer covering, husk or shell'.

Examples:

1. The hull of the ship was badly damaged in the storm.
2. The hull of the nut was removed to reveal the kernel.
3. The hull of the seed protects the plant embryo.
4. The hull was stripped off the ship to expose its inner structure.
5. The hull is an important part of a ship's design and construction.