colustrum Save DMLBS Du Cange Lana-Michelone colustrum v. colostrum COLUSTRUM, Novum lac, Let bée, in Glossar. Lat. Gall. ex Cod. reg. 521. Colostrum dixit Servius ad Virgil. eclog. 2. 22. cŏlustrum, i, n.: = colostra.