What is the meaning of Gravity?

The state or condition of having weight; weight; heaviness.

The state or condition of being grave; seriousness.

The lowness of a note.

The force at the Earth's surface, of the attraction by the Earth's masses, and the centrifugal pseudo-force caused by the Earth's rotation, resulting from gravitation.

Gravitation, the universal force exercised by two bodies onto each other.

Specific gravity.

Source: wiktionary.org