One of the Aṣṭottara Sahasranāma (Astottara Sahasranama; Thousand and Eight Names) of God Śiva. The dictionary-meaning of ‘Āyudha’ is ‘weapon’. One who holds weapons is called Āyudhī (Ayudhi). To clarify the meaning of Āyudhī (Ayudhi), Nīlakaṇṭha (Nilakantha), the commentator, has said —
“āyudhaṁ svasyādhāraṇaṁ śūlaṁ tadvān śūlītyartha.”
In several Purāṇas (Scriptures), Mahādeva’s ten-armed manifestation is conceptualised as follows– He holds in his ten arms extraordinary weapons like śula (sula), pāśupata (pasupata), the bow called Pināka (pinamka) and so on. That is why He is called Āyudhī.