Send up the river and Send-up

Send-up and send up the river are semantically related. In some cases you can replace phrase "Send-up" with "Send up the river", this phrases are similar.

Send-up noun - A work that imitates and exaggerates another work for comic effect.

Send up the river and send-up are semantically related. Sometimes you can use "Send up the river" instead a verb phrase "Send-up".