The Big Dipper, or Ursa Major has two stars (sometimes called the pointer stars) which line up directly with Polaris. Those two stars, at the "lip" edge of the Big Dipper, are Dubhe and Merak. Merak is at the "bottom" of the Big Dipper, and Dubhe is right at the "lip".
No single star points towards Polaris.
North star also called Polaris
Polaris is the north star.
The constellation points to the pole star (Polaris).
The Northern Star is also known as Polaris. This is the star that the Earth's axis of rotation approximately points to.
The North Star is not in the Big Dipper. It is actually Polaris, which is located close to the handle of the Little Dipper constellation. The Big Dipper is useful for finding Polaris because it points towards it.
The asterism known as the Big Dipper, visible in the Northen Hemisphere and part of the Ursa Major constellation, has two stars which famously point approximately at Polaris. (The stars are Merak and Dubhe.)
The name of the north star is Polaris. As the brightest star in the constellation of Ursa Minor it is also called alpha Ursae Minoris. It is actually a multiple star comprised of Polaris Aa, Polaris Ab and Polaris B.
Currently the Earth's pole points toward Polaris in Ursa Minor. 5000 years ago it pointed towards Vega.
the big dipper
The common name for Polaris, the North Star, is simply "Polaris."
The last 2 stars in the cup portion points up to the North Star of Polaris