Definitions
There are 2 meanings of the phrase
Send In.
Send In - as a verb
Mail in; cause to be delivered
Example: "Send in your comments"
Give one's name or calling card to a servant when making a formal visit
Example Sentences
"Please send in your application by the deadline."
"Could you send in the report as soon as possible?"
"They asked us to send in our feedback through email."
"You can send in your photos for the contest via the website."
"Don't forget to send in your registration form before the event."
