stack

n.[C]

1. 干草堆，稻草堆，麦秆堆
   The grain has gone mouldy in the stack.

   垛里的谷子发霉了。

2. （整齐的）一堆，一叠[S][（+of）]
   He placed his books in a neat stack.

   他把书整整齐齐放成一堆。

3. 【口】大量，许多[P1][（+of）]
   He's got stacks of money.

   他有许多钱。

4. （双面）大书架；书库[P1]
5. （三支步枪架成的）三角枪架
6. 烟囱；一排烟囱；排气管
   We could see several smoking stacks in the distance.

   我们可以看到远处好几个冒着烟的烟囱。

7. （作定高分层盘旋的）待降机群