1) Spanish girl name 
[river] Leira is a river in Oppland and Akershus, Norway. It comes from Leirsjøen (320m above sea level) in Romeriksåsene between Hadeland and Romerike, in Lunner municipality in Oppland. From here, it runs east through the countryside to Nannestad municipality in Akershus, and exits in Stråtjern (299m above sea level). It comes down to ...
a muddy area, periodically flooded, in rivers or along shores of lakes