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Siberia a region in northern Asia that goes from the Ural Mountains to the Pacific Ocean. Siberia is a part of Russia.
sibling a sister or a brother.
sick suffering from an illness; not well. [4 definitions]
sickle a tool with a long, sharp, curved blade and a short handle. It is used to cut grain and long grass.
sickly often sick; not strong or healthy. [2 definitions]
sickness the condition of being sick; illness. [2 definitions]
side one of the surfaces of an object. [12 definitions]
sideburns hair or whiskers growing along the side of a man's face.
side by side next to each other.
sideline a line at the side of an area; the side boundary of a playing field. [2 definitions]
sideshow a small, extra show connected to the main show.
sidestep to step aside or to one side. [2 definitions]
sidewalk a path for walking along the side of a street or road. Sidewalks are usually paved.
sideways from, to, or toward the side. [2 definitions]
siege a military act of surrounding a city or base, attacking it, and cutting off supplies. The goal of a siege is to force the city or fort to surrender.
sierra a chain of mountains with sharp peaks that look like the teeth of a saw.
Sierra Leone an African country on the Atlantic Ocean between the countries of Guinea and Liberia. The capital of Sierra Leone is Freetown.
sieve a tool used to separate solid from liquid or to separate smaller pieces of something from larger pieces. Sieves have small holes or wire mesh on the bottom.
sift to spread or sprinkle using a sieve or as though using a sieve. [2 definitions]
sigh to breathe out with a long breath because of being sad, tired, or relieved. [3 definitions]
sight the ability to see; vision. [7 definitions]