Definition of "64th" []

• The ordinal number of sixty-four in counting order (adjective)

WordNet. Princeton University. 2010.

• "On Tuesday, a day after the country's 64th anniversary of independence, he called for a "second freedom struggle.""
• "Dr. Sandage, 46, keeps a small box on his office desk, which contains an odd assortment of items, including a hose clamp, a chrome lug nut, some brown string, and a 13/64th drill bit."
• "He was formally inaugurating the 64th Festival of short digital films at Asian …"