Strong's #3570: Kuwshiy (pronounced koo-shee')
 the same as 3569; Cushi, the name of two Israelites:--Cushi.
Brown-Driver-Briggs Hebrew Lexicon:
 ּּׁ 
  kûshı̂y 
 
 Cushi = "their blackness" 
 1) an ancestor of Jehudi (Jeremiah 36:14)
 2) the father of the prophet Zephaniah (Zephaniah 1:1)
 
  Part of Speech: noun proper masculine
Relation: the same as H3569
Usage:
This word is used 2 times:
Jeremiah 36:14: "the son of Shelemiah, the son  of Cushi, unto Baruch, saying, Take"
Zephaniah 1:1: "unto Zephaniah the son  of Cushi, the son of Gedaliah, of Amariah,"