-u infinitive of かたい (硬い, 固い, 堅い, katai)

a female given name / 鈴蘭: a female given name / 鈴蘭: a place name

to colonise

The hiragana syllable れ (re). Its equivalent in katakana is レ (re). It is the forty-second syllable in the gojūon order; its position is ら行え段 (ra-gyō e-dan, “row ra, section e”).