A teardrop shape is the shape of a falling drop of water, like a tear falling from your eye. Teardrop shapes are often seen in jewellery.
Teat is another word for nipple, particularly on a female animal with babies. Teats are where milk comes from, to feed baby animals.
A teenager is someone aged between thirteen (13) and nineteen (19) inclusive. Teenagers are sometimes called adolescents. Teenagers are known for being rebellious as they grow up from children into adults.
Teepees are a style of tents made by native Americans. They were usually made from wooden poles, wrapped in decorated animal skins.