\Kam*sin"\, Khamsin \Kham*sin"\, n. [Ar. khams[=i]n, fr.
khams[=u]n, oblique case khams[=i]n, fifty; -- so called
because it blows for about fifty days, from April till June.]
A hot southwesterly wind in Egypt, coming from the Sahara.
[Written also {Khamseen}.]