<p><strong>Noun:</strong></p><ul><li>A river on the boundary between W New York and Ontario, Canada, flowing from Lake Erie into Lake Ontario.</li><li>34 miles (55 km) long.</li><li>Niagara Falls.</li><li>Fort, a fort in W New York, at the mouth of the Niagara River.</li><li>(lowercase) anything taken as resembling Niagara Falls in force and relentlessness; avalanche: a niagara of criticism.</li><li>Horticulture: a variety of white grape, grown for table use; the vine bearing this fruit.</li></ul><p><strong>End of Response</strong></p>