Declension table of ?rundra

Neuter	Singular	Dual	Plural
Nominative	rundram	rundre	rundrāṇi
Vocative	rundra	rundre	rundrāṇi
Accusative	rundram	rundre	rundrāṇi
Instrumental	rundreṇa	rundrābhyām	rundraiḥ
Dative	rundrāya	rundrābhyām	rundrebhyaḥ
Ablative	rundrāt	rundrābhyām	rundrebhyaḥ
Genitive	rundrasya	rundrayoḥ	rundrāṇām
Locative	rundre	rundrayoḥ	rundreṣu

Compound rundra -

Adverb -rundram -rundrāt