The Chinese word for Thursday is
星期四

xīng qī sì

Chinese Definition

Thursday
1. 名词. 星期四
Components
星
1. transliteration of Indian name Singh
期
1. to arrange a time; to engage; to arrange to meet
不期而遇 - to meet unexpectedly or by chance
2. (literary) to meet; to gather
3. to hope; to wish; to expect
期待 - to look forward to
未來可期
4. date; specific day; scheduled time
限期 - deadline
5. (Cantonese) time slots; schedule
我今個月啲期全部爆嗮。 - All my time slots are filled this month.
6. period of time; stage
學期 - semester
青春期 - adolescence
7. (geology) age (geochronologic unit)
8. (obsolete) undoubtedly; certainly
9. (obsolete) limit
10. (obsolete) good fortune; chance
11. (obsolete) one-year anniversary
12. (historical, obsolete) one-year mourning (garment) for the death of a senior family member
四
1. four
2. (literary) four directions; all directions (attn, zh, request for another quote, to be sure that i'm not wrong)
Synonyms: 四方
3. (music) la (musical note)
4. (printing) English; The size of type between 小四 (little 4) and 小三 (little 3), standardized as 14 point.
5. usage. As superstition, 四 is avoided because it is similar to 死 in sound.
6. (music) Kunqu gongche notation for the note low la (6̣).
Synonyms: 士