rack1
n.
1. 架子;挂物架;(行李)网架[C]
The racks were crowded with new clothes.
架子上挂满了新衣服。
2. 肢刑架,拷问台[the S]
He lay there groaning like a prisoner stretched out on the rack.
他躺在那里呻吟,就像一个囚犯被绑在肢刑架上。
3. 极大的苦痛,折磨[the S]
4. 【机】齿条[C],装配齿轮之齿棒
5. (风暴等的)破坏力[the S]
Many trees were twisted by the rack of the storms.
很多树被风暴摧折。
vt.
1. 把...放在架子上
2. 对...施肢刑
3. 使受极大痛苦,折磨
He was racked by doubts.
疑虑折磨着他。
4. 尽力使用;过度使用
Racking his brains, he couldn't think of a single example.
他绞尽脑汁却连一个例子都想不出来。
rack2
n.
【古】毁灭,荒废

Rack:
1. A rapid gait of a horse in which each foot strikes the ground separately.
2. Framework for holding objects.
3. Rib chops of lamb or mutton, left in one piece for roasting.
4. A term for certain physical punishment devices.