Words that start with R

extension When something turns around a fixed central point, it is said to be rotating. The blades of wind turbines and fans rotate around their axis.
Another word for rotate is spin.

Rottweilers are a large, strong, sturdy dog originally bred as a herding dog in Germany. Today they are often seen as guard dogs. They are good natured, calm, and are good around children.

Something is rough if you touch it and you can easily feel all the little bits that make it up, and those little bits are hard and sharp. If you fall over on a rough surface you are likely to skin your knees. Some things, like sandpaper, are rough so they can be used to scrape the surface off something else. The opposite of rough is smooth.

A game in which a small ball is spun around on a moving wheel, and people try to win money by guessing which hole the ball will fall into. Roulette games can be played at home with fake money as well as in a casino.

Rowing is a way of making a boat move, without any sails or an engine. People move the boat using a special device called an oar, which they push into the water in the opposite direction to the way they want the boat to move.

You rub something by pressing firmly against it and moving backwards and forwards. People rub metal things with a cloth to clean them. People rub their eyes when they are tired. And dogs love having their tummies rubbed.

A rubber band, or elastic band is a small loop made of very stretchy rubber that is used to hold bundles of things together.

Rubble is broken parts of a building, either leftovers from making the building or as a result of the building being knocked down. ruins are typically surrounded by rubble.

Rubies are gemstone quality corundums, a pink to red stone. They are made from aluminium oxide crystals, with the red colour from traces of chromium.

You ruffle something when you mess it up so it isn't smooth and neat anymore. The bird in the picture has ruffled feathers.
Ruffle can also be another word for a frill, although frills tend to be around the edges of things and ruffles can be anywhere.