خ د دkh-d-d
(ن) خَدَدَ يَخْدُدُkhadada yakhdudu (original form) ⟵ خَدَّ يَخُدُّ خَدًّاkhadda yakhuddu khaddan: to dig a long channel or trench in the ground.
خَدّkhadd pl. خُدُوْدkhudūd: cheek (because a line-like furrow forms on it). ﴿وَلَا تُصَعِّرْ خَدَّكَ لِلنَّاسِ﴾ (Luqmān 31:18)
اُخْدُوْدukhdūd pl. اَخَادِيْدakhādīd: long deep pit, trench — hence the episode of «aṣḥāb al-ukhdūd». ﴿قُتِلَ اَصْحٰبُ الْاُخْدُوْدِ﴾ (Al-Burūj 85:4). This root occurs twice in the Quran.