To send means to cause something or someone to go from one place to another. When you send a letter, you put it in the mail so it travels to your friend's house. When your teacher sends you to the principal's office, she's telling you to go there. When a quarterback sends a pass downfield, he throws the football toward a receiver running toward the end zone.

The word works for physical things and abstract ones too. You can send a package, send an email, send a text message, or send your regards (meaning you're asking someone to pass along your good wishes to another person). A lighthouse sends out beams of light to warn ships. A radio tower sends signals through the air.

Sometimes send means to cause something to happen or to put someone in a certain state. A funny joke might send you into fits of laughter. A scary movie might send shivers down your spine. An exciting announcement could send a crowd into wild cheering.

The key idea is making something move or happen, whether that's a physical object traveling through space, information moving between people, or an emotion spreading through a group.