byre的复数形式怎么写？

He fished and nailed up his catch to dry on the wall of the byre.他去钓了鱼，并把钓来的鱼钉在牛棚的墙上晒干。...

byre的音标：byre的英式发音音标为：['baɪə(r)]byre的美式发音音标为：[baɪr]...

n.牛棚，牛栏...