Lewis & Short

dĭgĭtŭlus, i, m. dim. [digitus],

  1. I. a little finger, Plaut. Rud. 3, 4, 15; id. Bacch. 4, 4, 24; Ter. Eun. 2, 2, 53; Varr. ap. Non. 135, 24: aniculae collum digitulis duobus oblidere, Cic. Scaur. Fragm. § 10 al.
  2. II. Transf., of the parrot’s foot, a toe, App. Flor. 2, p. 349; of the claw of a crab, Varr. Sat. Men. 9, 1 Oehler (Riese, digitis).