Could you forward that email to me?
Japanese people who reside overseas often buy things from Japanese websites and have them forwarded to the foreign addresses.
Could you please forward my mail to this address?
So, you're sending something that revolves. It's a little transfer / transmission, going through the wires. Little messages that revolve around as they zip through the lines to get to their destination. Try to imagine this happening in slow motion, getting to the other end.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.