2. To strike or beat with something hard or heavy; to rap;
as, to knock with a club; to knock on the door.
For harbor at a thousand doors they knocked.
--Dryden.
Seek, and ye shall find; knock, and it shall be
opened unto you. --Matt. vii.
7.
{To knock about}, to go about, taking knocks or rough usage;
to wander about; to saunter. [Colloq.] ``Knocking about
town.'' --W. Irving.
{To knock up}, to fail of strength; to become wearied or worn
out, as with labor; to give out. ``The horses were
beginning to knock up under the fatigue of such severe
service.'' --De Quincey.