רָצַם (cmp. רָצץ) to press, flatten. Y. Nidd. III, 50ᵈ אין סנדל אלא שרְצָמוֹ חי a sandal fœtus (v. סַנְדָּל) occurs only when a live fœtus has been pressing on it.
Nif. - נִרְצַם to be pressed, flattened. Bab. Nidd. 25ᵇ מתחלתו ולד הוא אלא שנ׳ Ar. (ed. שנרצף) the sandal was originally a normal embryo, but was flattened by pressure, v. supra. Bets. 28ᵇ שפוד שנ׳ a roasting spit which has been crushed (and its point broken off), contrad. to שנרצף, v. רָצַף.