What does post mean?
post
Definition
To put a letter into a postal collection box so that the postal service will deliver it.
Example sentences
Can these letters still be posted through that letter box, or has it filled up?
Can these letters still be posted through that letter box, or has it filled up?
Sam went back to the letter box to post the card we'd forgotten.
Sam went back to the letter box to post the card we'd forgotten.