dvai
dvai-parārdhyam — 15,480,000,000,000 solar years; SB 2.2.26
dvai-rūpyam — double image; SB 10.42.28-31
dvai-rathe — in combat involving only two chariots; SB 10.71.6
dvai-rathe — in one-on-one chariot combat; SB 10.71.7