(ض) وَصَدَ يَصِدُ وَصْدًاwaṣada yaṣidu wa-ṣdan (original form: وَصَدَ يَوْصِدُwaṣada yawṣidu): to remain fixed in a place, to stay put. (This verb is not used in the Quran.)
وَصِيْدٌwaṣīd (adjective on the pattern of فَعِيْلٌfaʿīl): a thing that always stays fixed; then used mostly for the doorway and threshold of a house or cave. Only once in the Quran: ﴿وَكَلْبُهُمْ بَاسِطٌ ذِرَاعَيْهِ بِالْوَصِيْدِ﴾ (Al-Kahf 18:18)
Form IV (ifʿāl) اَوْصَدَ يُوْصِدُ اِيْصَادًاawṣada yūṣidu īṣādan: to fix something in place, to shut (a door), to cover (a cooking pot); مُوْصَدَةٌmūṣadah (passive participle (ism mafʿūl), feminine; in one reading مُؤْصَدَةٌmuʾṣadah): closed over. ﴿عَلَيْهِمْ نَارٌ مُّؤْصَدَةٌ﴾ (Al-Balad 90:20); ﴿اِنَّهَا عَلَيْهِمْ مُّؤْصَدَةٌ﴾ (Al-Humazah 104:8)