Boyd’s Bible Dictionary:
(cot). A rustic tent or shelter (Isa. 24:20).
Concise Bible Dictionary:
Temporary booth or lodge, without stability (Isa. 1:8; Isa. 24:20). In Zephaniah 2:6 it is rather a shelter cut out of the rock.
Strong’s Dictionary of Hebrew Words:
Meaning:
feminine of 3733; a meadow