Hey Y'all-
My business partner and I were discussing options for our new highland attire store, and when it came to discussing 5 yard kilts, we began referencing them as "lilters", as in they are less than a 8 yard tank (I absolutely love that term), but still have some lilt to them. One of the definitions of "lilt" is-
"To move with lightness and buoyancy".

So,if this term hasn't been coined,I , Josh Brown, officially submit "lilter" as a term for a 5 yard kilt. Please disregard if someone else has already suggested it.