1. one
2. single
3. a (article)
4. as soon as
5. entire; whole; all; throughout
6. "one" radical in Chinese characters (Kangxi radical 1)
7. also pr. yāo for greater clarity when spelling out numbers digit by digit

1. (archaic) agate
2. (bound form) standard weight used with a balance scale
3. number
4. (computing) code
5. (clothing) size
6. yard (unit of length)
7. (coll.) kilometers per hour (informal misuse of "yard" to mean kph in speed references)
8. (coll.) to pile up; to stack
9. classifier for matters, items, situations etc (esp. when indicating whether they are the same or different, as in 不是一码事 bùshìyīmǎshì "not the same thing")
10. (Tw, HK) (finance) unit of 25 basis points (i.e. a 0.25% change in interest rate)

1. matter
2. thing
3. item
4. work
5. affair

classifiers: 件, 樁, 回

1. alternative form of 倳 (zì, “to establish”)
2. alternative form of 剚 (zì, “to stab”)