Declension table of ?dhanva

Neuter	Singular	Dual	Plural
Nominative	dhanvam	dhanve	dhanvāni
Vocative	dhanva	dhanve	dhanvāni
Accusative	dhanvam	dhanve	dhanvāni
Instrumental	dhanvena	dhanvābhyām	dhanvaiḥ
Dative	dhanvāya	dhanvābhyām	dhanvebhyaḥ
Ablative	dhanvāt	dhanvābhyām	dhanvebhyaḥ
Genitive	dhanvasya	dhanvayoḥ	dhanvānām
Locative	dhanve	dhanvayoḥ	dhanveṣu

Compound dhanva -

Adverb -dhanvam -dhanvāt