From Japanese 亜, 亞 (a) meaning "second, Asia", 阿 (a) meaning "big mound, mountain", 安 (a) meaning "peace, quiet", 和 (a) meaning "peace, harmony" or 愛 (a) meaning "love, affection" combined with 蘭 (ran) meaning "orchid", 藍 (ran) meaning "indigo", 桜 (ran) meaning "cherry blossom" or 卵 (ran) meaning "egg, ovum". Other kanji combinations are possible.
From Val d'Aran, a mountainous region in the north of Catalonia where the Occitan language is spoken. The name Aran originally comes from Basque haran, meaning "valley". It is given to both men and women.