Like mage portals, or different "sheep" spells...

The official name is "flyouts". For reference the API documentation was found on:

• http://api.wowjp.net/publ/api_funkcii/stroka_menju/getflyoutinfo/4-1-0-248
• http://api.wowjp.net/publ/api_funkcii/stroka_menju/getflyoutslotinfo/4-1-0-249