bos·sa no·va 
(bŏs′ə nōvə, bô′sə)
(bŏs′ə nōvə, bô′sə)n.
1. A style of popular Brazilian music derived from the samba but with more melodic and harmonic complexity and less emphasis on percussion.
2. A lively Brazilian dance that is similar to the samba.
[Portuguese : bossa, trend + nova, new.]