The phrase "send a sign" is correct and can be used in written English.
It means to communicate or show a sign or indication of something. Example: After waiting for hours, we finally decided to leave the abandoned house. But as we were walking towards the exit, we heard a loud thud. It sounded like someone was trying to get our attention. We stopped in our tracks and waited for a minute, hoping for the sound to come again. And then we heard it - a faint tapping on the window. We turned around and saw a figure in the window, waving at us. It was a sign that someone was inside the house. We quickly ran back inside and found a lost hiker who needed help. That faint tapping was a sign that we couldn't ignore.
The pair agreed before he died that the first of them to go would send a sign to the other if an afterlife exists.
Now a ground controller wanted the three strike fighters circling overhead to send a sign — both to the grunts and to any Taliban fighters shadowing them as they walked.
But since you surely want to send a sign that you are on our side and will protect us from Wall Street's powerful predators, we humbly propose the following as your first act: Ban payment for order flow.
Representative Steve Cohen, of Memphis, Tennessee, said he hadn't decided, not wanting to send a sign of disrespect to Israel but angry that Boehner and Netanyahu are using a joint session of Congress as a theatrical showcase for Republican policies in hopes of pressuring the White House.
Art is created for every reason under the sun, but surely the most basic, the most elemental reason of all, is to mark the fact of one's own existence in the world, to send a sign of it out like a flare so that others might see.
Following Monday's frenzy on Wall Street, lawmakers are desperately trying to send a sign to markets that Congress intends to act swiftly on passage of a bailout bill.
He said, "Well, maybe we could send a signed photograph".
By the way, I will send a signed copy of my latest book to the first person who can locate the original U-boat image, with or without the extract of shark.
The official state TV channel TVN just showed Pelé, the Brazilian soccer star, send a signed Brazilian T-shirt for the miners, saying "Dear friends, I'm praying for you".
To participate, they had to form an intensive care unit team, agree to complete the project work, and send a signed letter of commitment from a senior hospital executive with a list of team members.
Finally, investigators were asked to send a signed statement declaring that the original study was approved by an Ethic Committee and/or that study subjects provided a written consent to participate in the original study.
