Valmiki Ramayana 5.4.27
रथैः यानैः विमानैः च तथा गज हयैः शुभैः ।वारणैः च चतुः दन्तैः श्वेत अभ्र निचय उपमैः॥
rathaiḥ yānaiḥ vimānaiḥ ca tathā gaja hayaiḥ śubhaiḥ |vāraṇaiḥ ca catuḥ dantaiḥ śveta abhra nicaya upamaiḥ ||
Our plain-language meaning of this verse is waiting for scholar review.