1. caliga — de Vaan
caliga 'boot (esp. of soldiers)' [f. a\ (Cic.+) J Derivatives: PN Caligula (Tac.+). The earlier etymology as haplology from *calca-liga 'binding the heel' has already been refuted by WH. The etymology is unknown: to cald 'wooden shoe' (Paul, ex F.)? Or to calix 'vessel'? BibL: WH I: 138, EM 87. callgO, -inis 'darkness, obscurity' [f n] (PL+) Derivatives: caligare 4to be dark' (maybe Pac.+ 'to make dark' (uncertain … — [de Vaan, s.v. caliga, p. 97]