Shakti means ...

The term shakti refers to multiple ideas. Its general definition is dynamic energy that is responsible for creation, maintenance, and destruction of the universe. It is identified as female energy because shakti is responsible for creation, as mothers are responsible for birth. Without shakti, nothing in this universe would happen; she stimulates siva, which is passive energy in the form of consciousness, to create. Ardhanarishvara, a Hindu deity who is half male and half female, is an iconic representation of this idea. The deity is equally male and female, illustrating that the creation, maintenance, and destruction of the universe is dependent on both forces.

... and Shakti means ...

Sakti [shakti] means “power”; in Hindu philosophy and theology sakti is understood to be the active dimension of the godhead, the divine power that underlies the godhead’s ability to create the world and to display itself. Within the totality of the godhead, sakti is the complementary pole of the divine tendency toward quiescence and stillness. It is quite common, furthermore, to identify sakti with a female being, a goddess, and to identify the other pole with her male consort. The two poles are usually understood to be interdependent and to have relatively equal status in terms of the divine economy.

... and Shakti means

A lot of things. Mostly, The Creative Power of the Feminine