TgJ Ez1:9 :מַכוְנָן חֲדָא לִקבֵיל חֲדָא גַפֵיהוֹן לָא מִתחַזרָן בְמֵיזַלהוֹן‏ : turned one facing the other their wings do not rotate as they move along
See the entire entry for kwn vb. to be firm