שָׁמִיר Strong’s #8068 shamiyr

And I will lay it waste; it shall not be pruned nor hoed; but there shall come up briers and thorns: I will also command the clouds that they rain no rain upon it.

Isaiah 5:6

Frequently this word is used in the book of Isaiah in the phrase shamiyr v’shayit (briers and thorns). This word comes from the root shamar (Strongs #8104) often translated as “keep,” but more literally meaning “to guard” or “preserve.” When a shepherd was out at night with the flock he would construct a corral of briers (shamiyr) to “preserve” the flock from predators.