New words：

waddle /ˈwɑːdl/
v.(鸭子似地)蹒跚行走，摇摆地行走
n.摇摆的步子，蹒跚

Sample Sentences：

The stout old man waddled across the road.
A family of ducks waddled along the river bank.
I go for a waddle and do stretches and exercises every day.

stout [staʊt] adj. 肥胖的；肥壮的；粗壮结实的；

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