You blink when you briefly close both of your eyes at the same time. You blink to keep your eyes wet with tears and to keep them clean. Quite often people blink when a camera flash goes off, so they look like they have their eyes closed in the photo.
A brink is the edge of a steep drop, such as the brink of a cliff. Brink might also describe a point of change, for example "she was on the brink of a big discovery".
A clink is the light, high-pitched ringing noise that is made when you lightly hit glass or thin pieces of metal. Clink can also be used as a verb; the people in the picture are clinking their glasses together.
Cufflinks are used to hold closed the cuffs of dress shirts. Shirts that are designed to be used for cufflinks have two buttonholes. Cufflinks are effectively two buttons, held together with a short piece of chain or a short rod. Today, shirts that need cufflinks are usually only worn on special occasions.
A plant or animal is extinct if there are no more of them alive anywhere in the world. You can only see extinct animals in books, or stuffed in a museum like the dodo in the picture. Today, animals usually become extinct because people cut down all the trees and plants in the area where they live and they have nothing left to eat, or because people introduce a strange new animal that either eats them all so there are none left, or eats all their food and there is nothing left for them to eat.
Ink is a coloured liquid that is used to paint or draw on something with. Ink comes in lots of colours, but the colours used most for writing are black and blue.
A link is something that connects two things together somehow. A link is also one piece of a chain.
Scientific name: neovison vison (American mink) and mustela lutreola (European Mink)
Mink are a small, dark brown member of the weasel family. Their coat is thick and glossy and has been used for making fur coats from. Mink like to live around water, and eat fish, crayfish, rabbits and water birds.
Pink is a colour most often seen on flowers. You can make pink by mixing red and white paint. The car in the picture is pink.