Gaill \ga(i)-ll\ as a boy's name (also used as girl's name Gaill), is a variant of Gale (Irish, Gaelic, Old English), and the meaning of Gaill is "foreigner; cheerful, happy".

The baby name Gaill sounds like Gaile, Gaille, Gail, Gaell, Gall and Gill. Other similar baby names are Vaill, Baily, Bail, Bill, Kaile, Kail, Caile, Caily, Chill, Daily, Daile, Gable, Gadiel, Gael, Gaige, Gair, Gaius, Gal, Gayle, Gaelle, Gaillen, Galil, Galo, Gallo, Galt, Gamal, Gamul, Gamel, Gaine, Gil, Gili, Haily, Hall, Hill, Neill, Pall, Sail, Sill, Till, Vail, Vaile and Will.