Variant of calibre.
caliver (plural calivers)
- (historical) A type of light musket.
1603, John Florio, transl.; Michel de Montaigne, Essayes, printed at London: Edward Blount, OCLC 946730821:, II.3:
- That done, running out into the streets, with a crosse-bow in one hand, and a caliver [transl. harquebouze] in the other, at two shoots, slew the two first Turks that came next to his gates […].