Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
saccŭlus, i, m. dim. [saccus], a little sack or bag (not in Cic.); for filtering wine, Lucil. ap. Cic. Fin. 2, 8, 23; for grain, App. M. 9, p. 232 et saep.; esp. for money, a purse, Plin. 2, 51, 52, § 137: pleno cum turget sacculus ore, Juv. 14, 138; 11, 27; Mart. 5, 39, 7; 11, 3, 6; Dig. 16, 2, 1, § 36; Vulg. Prov. 7, 20.
Hence, comic.: sacculus Plenus aranearum, i. e. empty, Cat. 13, 8.