J / jĕcuscŭlum
noun

jĕcuscŭlum

gen. jĕcuscŭli · gender neuter · decl. 2nd
a little liver
a little liver, Cic. Div. 2, 14, 33; Plin. 11, 37, 76, § 196; or jocusculum, Plin. l. l., Jahn; Apic. 4, 2.