请问:Bottom,top,fiddle,BBM是什么意思

请问:Bottom,top,fiddle,BBM是什么意思
最近看了李安导演的《断背山》,之后看了一些影评,里面有这些个英文单词,不太明白什么意思?
可否解释一下.

ottom
KK:[]
DJ:[]
n.
1.底;底部;下端[C]
The bottom of the cup is broken.
这杯子的底破了.
2.屁股,臀部[C]
3.(海、河的)底部,水底[the S]
4.最低下的部分,底层[the S]
The apples at the bottom of the basket are smaller.
篮子底部的苹果较小.
5.远端,尽头[the S] [(+of)]
6.起点;原因[the S] [(+of)]
We will get to the bottom of the mystery.
我们将揭开这个谜.
7.(汽车等的)最低档[U]
8.吃水线以下的船体[C]
9.低洼地[P]
10.持久力,耐力[U]
a.[Z]
1.最低的;最后的,最下的
The bottom layer is a mixture of sand and clay.
最下面的一层是沙和泥的混合物.
vt.
1.在...上装底
2.对...寻根究底
They tried to bottom his motives but failed.
他们曾想追查他的动机但未成功.
vi.
1.基于,根据[(+on/upon)]
Upon what does his claim bottom?
他提出这一要求的根据是什么?
2.到达底部;降至最低点[(+out)]
The recession has bottomed out.
经济衰退已至谷底.
TOP
abbr.
1.=Technical Office Protocols 【电脑】TOP协定(一个OSI协定堆叠)
top1
KK:[]
DJ:[]
n.
1.顶部;山顶;头顶[C][the S][(+of)]
The tower is on the top of the hill.
塔位于山顶上.
2.表面;上方[C][the S]
She slipped the paper over the table top to Marvin.
她将报纸从桌面上悄悄地递给马文.
3.(车辆等的)顶,篷;(容器的)盖,栓[C][S1][(+of)]
I can't unscrew the top of this bottle.
我拧不下这瓶的盖子.
4.首位,首席;上座[the S][(+of)]
A man of great ability like him will eventually reach the top.
像他这样才能出众的人终究会升到最上层的.
5.最高程度,顶点,极点[the S][(+of)]
He sang at the top of his voice.
他放声高唱.
6.精华;最重要的事物[the S][(+of)]
This hotel serves the top of society.
这个旅馆为社会的上层人物提供服务.
7.(植物的)长出地面部分[P]
Beet tops are somewhat like spinach.
甜菜叶子有点像菠菜.
8.【棒】前半局[C]
9.(汽车的)高速档[U][C][(+in)]
a.
1.顶的;顶上的
His apartment is on the top floor.
他的寓所在顶楼.
2.最高的;最优良的
We pay top prices for used cars.
我们出最高价收购旧汽车.
3.最重要的;居首位的
They agreed to give the matter top priority.
他们同意优先考虑这件事.
vt.
1.盖;给...加盖(或顶)[(+with)]
The mountain is topped with snow all the year round.
这山顶终年积雪.
2.达到...的顶部
Call me when you see a gray car topping the hill.
当你看到一辆灰色的汽车到达山顶时就叫我.
3.高于;超过;胜过
U.S.investments here topped one billion dollars.
美国在这里的投资超过了十亿美元.
Our profits have topped $200,000 this year.
我们今年的利润超过二十万美元.
4.为(植物)剪顶(或打尖)
vi.
1.向高处升
2.结束
3.达到顶点
4.高出;超越
top2
KK:[]
DJ:[]
n.
1.陀螺[C]
fiddle
KK:[]
DJ:[]
n.[C]
1.【口】小提琴
2.【俚】欺诈;骗局
3.【海】餐具框
vi.
1.【口】拉提琴
2.胡来,乱动;(对机械等)盲目摆动[(+with)]
Don't fiddle with my new car.
别乱动我的新汽车.
3.【口】游荡;不经意地做事[(+about/around)]
Stop fiddling about.
别再闲荡了.
vt.
1.【口】用小提琴演奏(曲调等)
2.浪费(时间等)[(+away)]
He fiddled away the whole afternoon.
他浪费了整整一个下午.
3.【口】用诡计获得,骗取
4.【口】伪造,窜改(帐目等)
fiddle an income tax return
伪造所得税申报表
断背山 Brokeback Mountain BBM是电影断臂山的缩写