KIR Views 5 meanings found KIR is widely used to refer to County Kerry in Ireland in geographic and tourism contexts, appears as internet slang meaning ‘keep it real’, and in immunology denotes killer cell immunoglobulin‑like receptors. Medical Killer cell Immunoglobulin-like Receptor Miscellaneous Knights of the Immortal Realm Kbc Interpolis And R Regional Kerry County, Republic of Ireland Internet Keep It Real