Is there a name for this?

I've got a 50's dress with these sheer panels hanging from the back waist but cannot think of what they are called. Watteau is not quite right, is it?

 

Chiffon swags? Flying chiffon panels?

 

I just find some listed like this- it's a "train". I know I knew this but couldn't think of the word, lol.

 

Trains are floor length (wedding dresses are the best examples) so this wouldn't be a train.

 

I use the term 'fly away panels'.

 

Perfect - I like that a lot!