Keallin \ke(al)-lin\ as a boy's name is a variant of Keelan (Irish, Gaelic), and the meaning of Keallin is "small, slim".
The baby name Keallin sounds like Keallan and Kellin. Other similar baby names are Kalvin, Katlin, Dallin, Kellen, Kalin, Kaelin, Karlin, Keillan, Kealan, Kellan, Keltin, Kelltin, Kelvin, Kelwin, Mallin, Mellin and Tallin.