Definition of "Si"

Si¹

/saɪ/

proper noun
1. A diminutive of the male given name Simon.
2. A diminutive of the male given name Silas.

Si²

/sɪ/

proper noun
1. A river in Shandong, China.
2. A county of Suzhou, Anhui, China.
  Quotations
  Most of Anhui’s cases were identified in Suzhou’s Si County, where on Wednesday the authorities ordered its 760,000 residents to refrain from going out unless it was necessary.
  2022 July 5, Zixu Wang, “Covid Outbreak Emerges in China’s Anhui Province”, in The New York Times‎, archived from the original on 2022-07-05, The Coronavirus Pandemic‎
3. (historical) Various prefectures of imperial China.

Si³

proper noun
1. Alternative form of Xi