river [a large amount of water that flows across land into another river, a lake or an ocean] Native Americans called the big river "the Father of Waters."
road [a long piece of hard ground built between two places so people can walk, drive or ride easily from one place to the other] The road was straight until it reached the mountains.
rob [(1) to take money or property secretly or by force; (2) to steal] Someone robbed his television. (1) The two men robbed her as she walked home from work. (2)
rock [a hard piece of mineral matter] He threw a rock across the river.
rocket [a device shaped like a tube that moves through air or space by burning gases and letting them escape from the back or bottom, sometimes used as a weapon] The huge rocket launched three men on a flight to the moon.
roll [(1) to turn over and over; (2) to move like a ball] The children rolled down the hill. (1) She rolled her eyes at his joke. (2)
room [a separate area within a building with its own walls] The boy spent hours playing in his room.
root [the part of a plant that is under the ground and takes nutrients from the soil] The roots brought food to the big tree and held it firmly in the ground.
rope [a long, thick piece of material made from thinner pieces of material, used for tying] The boy tied the end of the rope around the tree.
rough [(1) not flat or smooth; (2) having an uneven surface; (3) violent; (4) not made well] The rough floor was made of wood, split by hand. (1) We found rough ground at the top of the mountain. (2) The strong wind made a rough sea. (3) The rough wall of stones did not stand straight. (4)
round [having the shape of a ball or circle] The stone plate was perfectly round.
rub [to move something over the surface of another thing] The boy rubbed his hand over the cat's back.
rubber [a substance made from the liquid of trees with the same name, or a similar substance made from chemicals] The ball was made of rubber.
ruin [(1) to damage severely; (2) to destroy] The rain ruined the book he left outside. (1) Time ruined the old building, leaving only fallen walls. (2)
rule [(1) to govern or control; (2) to decide; (3) a statement or an order that says how something must be done] One party ruled the Senate; the other ruled the House of Representatives. (1) Five of nine Supreme Court judges ruled that the Republican should be President. (2) The rules were not clear on how to count the votes. (3)
