US Military Slang meaning: To recommend, suggest, or order an action to be quickly or immediately taken.
Originates from sending orders or information down the line. A soldier would tell another soldier something, and say "Send it (down the line)", causing the other soldier to do the same to the next soldier, until the message is completely disseminated along the line.
The term developed independently in the civilian rock climbing community to mean the same thing. Has recently become part of civilian slang, probably originating here.
Also used informally by tankers or redlegs to mean fire the main gun or howitzer, to send a round downrange. Later used for firing any projectile from any weapon system.
Originates from sending orders or information down the line. A soldier would tell another soldier something, and say "Send it (down the line)", causing the other soldier to do the same to the next soldier, until the message is completely disseminated along the line.
The term developed independently in the civilian rock climbing community to mean the same thing. Has recently become part of civilian slang, probably originating here.
Also used informally by tankers or redlegs to mean fire the main gun or howitzer, to send a round downrange. Later used for firing any projectile from any weapon system.
by BigSmallWorld December 19, 2019
Get the Send Itmug. by AnonymousSeaPickle April 15, 2021
Get the Send Nudesmug. 
by Braap October 28, 2019
Get the NATIONAL SEND NUDES DAYmug. Send nudes to your favorite person
by Yeeter Skeeter 132321 September 22, 2019
Get the National send nudes daymug. Today is the day after Send Nudes day. That means when you learned about it just too late, you scrambled to get women to send you nudes and it didn't work, so now there has to be a whole day dedicated to belated nudes.
Listen Nika, I forgive you for not sending them yesterday, but I can still accept the nudes on account of it being National Belated Send Nudes Day.
by NewYorkMinute May 28, 2018
Get the National Belated Send Nudes Daymug. by Yeeted lord April 16, 2022
Get the Send pussy pic daymug.