late Middle English: via Old French from Latin virgarod. The current verb sense dates from the late 18th centlate Middle English: from Latin virgarodearly 17th cent. (in the sense descend to the horizon): from Latin vergereto bend, incline
英英釋義行業(yè)釋義網絡釋義
noun
1.a region marking a boundary
2.the limit beyond which something happens or changes;