الأَوْتَادِ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – الأَوْتَادِ is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

الأَوْتَادُ is the natural state of this definite noun and it changes to الأَوْتَادِ due to: 1) a preposition that precedes it or 2) a possessed noun that precedes it or 3) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

Stakes, Hosts; Pegs; Chiefs; Armies; Poles of tents

To drive in a stake, fix a stake into the ground, fix a thing firmly

Surah/Below are the 2 verses in the holy Quran containing the genitive nounالأَوْتَادِ
Verse 
38-12
89-10and Firaun (Pharaoh) possessor of the stakesوَفِرْعَوْنَ ذِي الأَوْتَادِ