fissĭlis — Lewis & Short
fissĭlis, e, adj.findo.
I That may be cleft or split, fissile (rare;
not in Cic. or Caes.): robur,Verg. A. 6, 181;
lignum,id. G. 1, 144; Plin. 16, 39, 73, § 187:
arundo,id. 16, 36, 64, § 157:
vena lapidis,id. 36, 17, 27, § 131.—
II Cleft, split:
stipes,Col. 9, 1, 3. —Comically transf.:
ad focum si adesses, Non fissile haberes caput,you would not have had your crown cracked, Plaut. Aul. 3, 2, 26.