PTMeg 71.d:3[2] :רצועתה דתפילתה‏ :
See the entire entry for rṣūˁā, rṣūˁṯā n.f. strap

PTMeg 71.d:3[2] :ר׳ ירמיה אפסקת רצועתה דתפילתה‏ : the strap of PN's phylactery broke
See the entire entry for tpylh n.f. phylactery