/kɔ:d; kɔrd/
n (in music) combination of notes usu sounded together in harmony （音乐的）和弦, 和音.

/kɔ:d; kɔrd/
n
1 (mathematics 数) straight line that joins two points on the circumference of a circle or the ends of an arc 弦（与圆的两点或弧的两端相交的直线）. =>illus at circle 见circle之插图.
2 string of a harp, etc （竖琴等的）弦.
3 (idm 习语) strike a chord => strike2. touch the right chord => touch2.

n[C]
[Sense: 1; Date: 1400-1500; Origin: accord]
[Sense: 2-3; Date: 1500-1600; Origin: cord; influenced by Latin chorda ( CORD) (]
[Sense: 2; Date: (17-19 centuries); Origin: chord 'string of a musical instrument' )]
a combination of several musical notes that are played at the same time and sound pleasant together
strike/touch a chord (with sb)
to do or say something that people feel is familiar or true
　Many of the things she says will strike a chord with other young women.
　He knew that what he was saying had touched a chord.
technical a straight line joining two points on a curve

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HINT
Do not confuse with cord (=thick string), which has the same pronunciation.

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