كوس

Etymology 1
From.

Noun

 * 1) set square
 * 2) equilateral triangle for measuring
 * 3)  timbrel, small drum, or a

Etymology 2
A borrowing from likely, as it is transmitted for some of the wind terms, the dialect of the, belonging originally to the vocabulary of those who voyage upon the sea between and ; possibly related to the idea of stooping, throwing head over heels in the verbs , , likely from , as a heavy wind topples a vessel.

Noun

 * 1) the headwind of a vessel on the sea
 * 2) particularly, the south-west wind, رِيح الكَوْس, or مَوْسِم الكَوْس meaning the south-west monsoon wind; the west wind being called, the south wind , the north-east wind , or

Verb

 * 1) to prostrate, to cut down the standing firmly of, to throw head over heels, to make lie inverse

Etymology
.

Noun

 * 1) kus, a sort of large kettledrum similar to timpani used by ancient Persians