Little girl or pure
In Spanish, Nena is a common term of endearment for a young girl. It is also considered a variant of Nina, which has roots in several languages meaning 'pure' or 'little girl'.
Less common today
Nena isn't in the latest US Top 1000. It last peaked at #3,162 in 1990.
US births per 5-year period, 1990โpresent (SSA data).
German singer famous for the 1983 hit '99 Luftballons'
Fashion model and mother of actress Uma Thurman