clābulāre, is, n. clabula = clavula a large, open wagon, probably with sides of wicker-work, used in transporting soldiers, Cod. Th. 6, 29, 2, ยง 2.
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Hence, clābulāris (clāv-), e, and clābulārius, a, um, adj., of or belonging to the transport wagons: clavularis cursus facultate permissā, Amm. 20, 4, 11; Cod. Th. 8, 5, 62.