Or mishtan {mish-awn'}; from sha'an; a support (concretely), i.e. (figuratively) a protector or sustenance -- stay.
see HEBREW sha'an
H4937. mish
'en מִשְׁעָן noun [masculine] support, staff; — absolute ׳מ, figurative of ׳י, 2 Samuel 22:19 = Psalm 18:19; construct מִשְׁעַןמָֿ֑יִם וְכֹל מִשְׁעַןלֶֿחֶם כֹּל Isaiah 3:1 (gloss, see Commentaries).
מַשְׁעֵן noun masculine id.; — absolute ׳מ וּמַשְׁעֵנָה Isaiah 3:1 figurative support and staff.