intransitive verb
Definition: To become empty or to lose liquid gradually; to flow out or off.
Example: The water will drain from the sink after I pull the plug.
noun
Definition: A pipe or channel that allows liquid to flow away, or a gradual loss of something, like energy or resources.
Example: The rainwater flows through the drain into the sewer system.
transitive verb
Definition: To remove liquid from something, making it empty or less full.
Example: She decided to drain the water from the pool before cleaning it.