How to say "weapon" in Arabic
CognateMeaningweapon
Arabic · Modern Standard Arabic
سِلَاح
silāḥסלאח
سلاح
Hebrew · Modern Hebrew
נשק
neshekنِشِك
How the two words are related
Cognate
Same Semitic root, same meaning — you already know this word.
Arabic root
س-ل-حHebrew root
ש-ל-חSame root as Hebrew שלח — whose everyday meaning is 'to send', but which also carries a rarer, poetic sense: 'a weapon, a dart' (Job 33:18, Joel 2:8), a thing hurled. Arabic silāḥ keeps only that noun sense as its everyday word for 'weapon'; the 'send' verb went a separate way (أرسل).
Related Hebrew word:שלחshalakhشَالَاخ
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In a phrase
سِلَاح نَارِيّ
silāḥ nāriyyסלאח נאריa firearm
Plural
أَسْلِحَة
asliḥaאסלחהBroken plural aCCiCa (أفعلة) — like سلاح→أسلحة.