Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

callum, i, n. (callus, i, m., Cels. 5, 18, 36; 5, 26, 31 al.; Domit. Mars. ap. Charis. p. 55; plur. calli, Scrib. Comp. 37; 205; Suet. Aug. 80) [cf. Gr. καλάμη; Lat. culmus, culmen].

  1. I. The hardened, thick skin upon animal bodies: fere res omnes aut corio sunt Aut etiam conchis aut callo aut cortice tectae, Lucr. 4, 935: calceamentum solorum callum, Cic. Tusc. 5, 32, 90: pedum, Plin. 22, 25, 60, § 127; cf. id. 9, 35, 54, § 108.
    Plur., Suet. Aug. 80.
    Hence,
    1. B. Meton.
      1. 1. The hard flesh of certain animals: aprugnum, Plaut. Poen. 3, 2, 2; id. Pers. 2, 5, 4; for which absol. callum, id. Capt. 4, 3, 4; id. Ps. 1, 2, 33: manus elephanti, Plin. 8, 10, 10, § 31: locustarum, id. 9, 30, 50, § 95.
      2. 2. The hard skin or the hard flesh of plants: uvarum, Plin. 14, 1, 3, § 14: pirorum ac malorum, id. 15, 28, 34, § 116: fungorum, id. 22, 23, 47, § 96: foliorum, id. 16, 22, 34, § 82; Pall. Mart. 10, 28 al.
      3. 3. The hard covering of the soil: terrae, Plin. 17, 5, 3, § 33; 19, 2, 11, § 33; 31, 4, 30, § 53; also, of the hardness of salt: salis, id. 16, 12, 23, § 56.
  2. II. Trop., hardness, callousness, insensibility, stupidity (rare; most freq. in Cic.): ipse labor quasi callum quoddam obducit dolori, renders callous to pain, Cic. Tusc. 2, 15, 36; 3, 22, 53; id. Fam. 9, 2, 3: ducere, Sen. Cons. ad Marc. 8, 2: inducere, Quint. 12, 6, 6.