What is the meaning of 美?

suffix used by female given names, such as 奈美 (なみ, Nami), 恵美 (えみ, Emi; めぐみ, Megumi), 宏美 (ひろみ, Hiromi)

suffix used by male given names

Short for 美(미)國(국) (Miguk, “the USA”).

Source: wiktionary.org

See also