https://chinesecharacteraday.com/wp-content/uploads/2011/02/Yin_Shua.mp3 印 yìn means to print, engrave, seal, stamp, chop. It is pronounced in the fourth tone. 刷 shūa means to brush, clean, daub, paste. It is pronounced in the first tone. When the word 第 dì is placed before the number 一, the two words 第一 means First.