1 tefillin | Definition of tefillin
te·​fil·​lin | \ tÄ“-ˈfi-lÉ™n also -lÉ™m How to pronounce tefillin (audio) \

Definition of tefillin

: the phylacteries worn by Jews

First Known Use of tefillin

1613, in the meaning defined above

History and Etymology for tefillin

Late Hebrew tĕphīlīn, from Aramaic, attachments

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More from Merriam-Webster on tefillin

Britannica.com: Encyclopedia article about tefillin