impeded or encumbered as if chained or fettered

So as to form a circle or trace a circular path, or approximation thereof. / So as to surround or be near. / Nearly; approximately; about. / From place to place.

Plegadis falcinellus

To push or thrust out. / (transitive) To form or shape (a metal, plastic etc.) by forcing it through a die or an opening. / (transitive) To expel; to drive off.