tzi·tzit or zi·zith 
(tsē-tsēt, tsĭtsĭs)
(tsē-tsēt, tsĭtsĭs)pl.n.
Judaism
Judaism
1. The knotted tassels of thread, symbolizing the 613 commandments in the Hebrew Scriptures, attached to the corners of a tallit or other garment.
2. An undergarment bearing these tassels, worn by men or boys. Used with a singular verb.
[Hebrew ṣîṣīt, tassel, fringe; see ṣy in the Appendix of Semitic roots.]
tzitzit