资料来源 : pyDict

壁垒,保垒,筑城术

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Vallation \Val*la"tion\, n. [L. vallatio, fr. vallare to
   surround with a rampart, fr. vallum rampart. See {Wall}, n.]
   A rampart or intrenchment.