sitfast 
[医] 拒食症
Sitfast \Sit"fast`\, a. [Sit + fast.]
Fixed; stationary; immovable. [R.]
'T is good, when you have crossed the sea and back,
To find the sitfast acres where you left them.
--Emerson.
Sitfast \Sit"fast`\, n. (Far.)
A callosity with inflamed edges, on the back of a horse,
under the saddle.