noun - the act of cutting the foreskin off a boy's or man's penis (esp. for religious or medical reasons)

noun - a small ship used by the Spanish and Portuguese at the beginning of 15th century (esp. for exploration)

adjective - shared by two or more parties, done by one party to the other and the other way round

noun - one of the key things that people believed the world was build of (water, earth, fire and air)

noun - the state of being married to more than one person at the same time (illegal in most societies)

noun - the act of standing on your head in the vertical position, supported by your hands or your forearms

noun - a birth defect in which there is a split or opening in the roof of the baby's mouth

noun - a white substance that is used in cooking in order to preserve food or to improve the taste, it is present in the water of the seas and oceans

noun - (Harry Potter) one of the four houses at Hogwarts, the one that has a badger in as a symbol, the one that Cedric Diggory and Susan Bones belong to

noun - a device that is used to control computer programs, you hold it in your hand and move it in the direction you want the cursor on the screen to move

noun - a game played by children at parties etc. There are chairs (the number of players minus one) and the players are walking or dancing around the chairs. When the music suddenly stops, they have to sit down. The person who doesn't find a chair is out. One chair is taken away and the music continues. This is repeated until there is only one player left

noun - the part of a chimney that extends above the roof of a building, typically made of brick or stone

noun - the quality or color of a sound that distinguishes it from other sounds of the same pitch and volume

verb - to divide people or things into groups so that the ones with similar characteristics are in the same group

noun - changes in the earth's climate, especially the rise in temperature that is believed to be caused by human activity