飛ひ行こう機き雲ぐも

noun

contrail; vapor trail

The white trail left behind by an aircraft in the sky.

• 空そらに長ながい飛ひ行こう機き雲ぐもができていた。

  A long contrail had formed in the sky.

• 飛ひ行こう機き雲ぐもがしばらく消きえなかった。

  The contrail didn't disappear for a while.