Check your work.
Meaning: This means to examine something carefully to make sure it is correct, when referring to a task or activity that someone has to do. It's like saying, Look over what you have done carefully to make sure it is right.
Choice of Words: Check is a verb that means to examine something carefully to make sure it is correct. Your is a possessive pronoun that shows ownership. Work is a noun that means a task or activity that someone has to do. Together, they form an instruction to examine something carefully to make sure it is correct, when referring to a task or activity that someone has to do.
Alternative Expressions
Related Expressions