A stump or base of a branch that has been lopped off; a short
branch, or a sharp or rough branch; a knot; a protuberance.

A tooth projecting beyond the rest; contemptuously, a broken
or decayed tooth.

A tree, or a branch of a tree, fixed in the bottom of a river
or other navigable water, and rising nearly or quite to the surface, by
which boats are sometimes pierced and sunk.

To cut the snags or branches from, as the stem of a tree;
to hew roughly.

To injure or destroy, as a steamboat or other vessel, by a
snag, or projecting part of a sunken tree.