assellor

as-sellor ( ads- ), ātus, 1, v. dep. [sella], to go to stool, to void (perh. only in Veg.):

multum stercoris assellatus,

Veg. 2, 22, 2; 5, 44, 1; 5, 56, 1:

sanguinem,

id. 5, 9, 1.