As a noun sparable
is a small headless nail used in making shoes (especially the heels).
As an adjective soarable is
suitable for soaring.
A small headless nail used in making shoes (especially the heels)
Suitable for soaring.
* 1912 , Flight [https://books.google.co.uk/books?id=ZTY6AQAAMAAJ]
- The outer third of the wing of a vulture consists of the wing tips. The inner two-thirds of the wing are cambered (when the wing is extended), and are concerned with lifting effort in unsoarable air and with lifting and tractive effort in soarable air.