fibrin — the insoluble protein end product of blood coagulation, formed from fibrinogen by the action of thrombin in the presence of calcium ions.
hiding — the pelt or skin of one of the larger animals (cow, horse, buffalo, etc.), raw or dressed.
hydrant — an upright pipe with a spout, nozzle, or other outlet, usually in the street, for drawing water from a main or service pipe, especially for fighting fires.
