See also: cail English Proper noun Cail (plural Cails) A surname. Statistics According to the 2010 United States Census, Cail is the 19865th most common surname in the United States, belonging to 1353 individuals. Cail is most common among White (78.94%) and Black/African American (15.52%) individuals. Anagrams -ical, Alic, Cali, Laci, laicWikiwand - on Seamless Wikipedia browsing. On steroids.