Vallum \Val"lum\, n.; pl. L. Valla, E. Vallums. [L. See Wall.]

(Rom. Antiq.) A rampart; a wall, as in a fortification. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Vallum \Val"lum\, n.; pl. L. Valla, E. Vallums. [L. See Wall.]

(Rom. Antiq.) A rampart; a wall, as in a fortification.

Source: Webster's Revised Unabridged Dictionary (1913)