hairline hairlet • hairlock · · · Info · Definitions · Characters · · hairline · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a very thin line. · · Noun Definition 1 (noun) the natural margin formed by hair on the head. · · Noun Definition 2 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072