Webster's 1913 Dictionary
KAMSIN; KHAMSIN
Kam *sin ", Kham *sin ", n. Etym: [Ar. khamsin, fr. khamsun, oblique case khamsin, fifty; -- so called because it blows for about fifty days, from April till June. ]
Defn: A hot southwesterly wind in Egypt, coming from the Sahara. [Written also Khamseen.]
Duden Dictionary
Kamsin
Kam sin , Cham sin Substantiv, maskulin Geografie , der Chamsin |kamˈziːn kamˈziːn |der Kamsin; Genitiv: des Kamsins, Plural: die Kamsine der Chamsin; Genitiv: des Chamsins, Plural: die Chamsine arabisch ẖamsīn heißer, trockener Wüstenwind in Ägypten
The Wordsmith Dictionary