We don't have synonyms for tefillin yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are tefilla, tellin and tephillin.
(N) :
Tefillin (Israeli Hebrew: / ; Ashkenazic pronunciation: ; Modern Hebrew pronunciation: ), or phylacteries, are a set of small black leather boxes with leather straps containing scrolls of parchment inscribed with verses from the Torah.
(N) :
Tefillin (Israeli Hebrew: / ; Ashkenazic pronunciation: ; Modern Hebrew pronunciation: ), or phylacteries, are a set of small black leather boxes with leather straps containing scrolls of parchment inscribed with verses from the Torah.