What is the meaning of Hedge?

A thicket of bushes, usually thorn bushes; especially, such a thicket planted as a fence between any two portions of land; and also any sort of shrubbery, as evergreens, planted in a line or as a fence; particularly, such a thicket planted round a field to fence it, or in rows to separate the parts of a garden.

Source: Webster’s Revised Unabridged Dictionary (1913), via OPTED