אֶת־יִתְדֹ֧ת הַמִּשְׁכָּ֛ן וְאֶת־יִתְדֹ֥ת הֶחָצֵ֖ר וְאֶת־מֵיתְרֵיהֶֽם׃
the pins of the tabernacle, and the pins of the court, and their cords;
Rashi on Exodus
יתדת THE PINS — in order to insert them into the ground and to fasten thereby the edges of the curtains that they should not be moved about by the wind.