The ordinal form of the number twenty-eight.(adjective)
The person or thing in the twenty-eighth position.(noun)
One of twenty-eight equal parts of a whole.(noun)
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Use "twenty-eighth" in a sentence
"Every twenty-eighth—every veintiocho—I am there at San Hipólito, working my way through the crowds, among the statues and woven and airbrushed images of the patron saint of lost causes."
"Every twenty-eighth day of the month is another day of chaotic pilgrimage in Mexico City."
"In Mexico City, San Judas Tadeo demands not only pilgrimage to San Hipólito every twenty-eighth day of the month from his faithful, but apparently also the donning of specific garments."