What does Sylvester mean, popularity, numerology and more. The name Sylvester is of Latin and English origin. The meaning of Sylvester is from the forest.ylvester is generally used as a boy's name. It consists of 9 letters and 3 syllables and is pronounced Syl-ves-ter. In the U.S. in 2014, it ranked 1927 in baby name popularity for boys with 75 occurrences. Less than 5 girls were given the name.