attrib.
1- consisting of three parts; threefold有三部分的; 三倍的：
the fish were caught with large treble hooks dragged through the water.
这条鱼被拖在水中的大三重鱼钩给钩住了。
1.1
- multiplied or occurring three times乘以三的, 出现三次的：
she turned back to make a double and treble check.
她折回去, 核查了两三遍。
1.2
- used to indicate that a number occurs three times in succession（数字）连续出现三次的：
call Kate on 0500 403 treble zero.
用0500 403三个零这个号码与凯特通话。
- three times as much or as many三倍：
the tip was at least treble what she would normally have given.
这小费至少是她平时所给的三倍。
1
- Brit. three sporting victories or championships in the same season, event, etc.〈英〉（赛期、比赛中）连胜三次, 三连冠：
the victory completed a treble for the horse's trainer.
这次胜利使驯马师得以连中三元。
2
- Darts a hit on the narrow ring enclosed by the two middle circles of a dartboard, scoring treble【镖】镖盘正中（得三倍分的）内圈。
3
- Brit. a system of betting in which the winnings and stake from the first bet are transferred to a second and then (if successful) to a third〈英〉三重彩投注。
4
- a threefold quantity or thing, in particular三倍, 三重物, 尤指：
4.1
- (in showjumping) a fence consisting of three elements（超越障碍马术比赛的）三重栅栏。
4.2
- a crochet stitch made with three loops of wool on the hook at a time三重钩编针脚。
4.3
- a drink of spirits of three times the standard measure（一杯）三倍分量的酒。
- a number or amount which is three times as large as a contrasting or usual number or amount三倍：
by virtue of having paid treble, he had a double room to himself.
付了三倍的钱后, 他拥有了一套自己的双人间。
- make or become three times as large or numerous使成三倍, 增加两倍：
with obj. rents were doubled and probably trebled租金增加一倍, 也有可能是两倍
no obj. his salary has trebled in a couple of years.几年内, 他的工资涨了两倍。
词源
Middle English: via Old French from Latin triplus （see TRIPLE）.
1
- a high-pitched voice, especially a boy's singing voice高音（尤指男童声）。
1.1
- a boy (or girl) with such a singing voice高音男童（或女童）。
1.2
- a part written for a high voice or an instrument of a high pitch高声部; 高声部乐器。
1.3
- as modifier denoting a relatively high-pitched member of a family of similar instruments高声部乐器的：
a treble viol.
一把高音提琴。
1.4
- （亦作treble bell）the smallest and highest-pitched bell of a ring or set（套钟中最小, 音高最高的）高音钟。
1.5
- mass noun the high-frequency output of a radio, or audio system, corresponding to the treble in music高音（无线电或音响系统的高频输出）。
词源
late Middle English: from TREBLE1 , because it was the highest part in a three-part contrapuntal composition.