I vano 1 , na . ( Of the lat. )( vanus ). 1. adj. Falto from reality, substance or entity. 2. adj. hollow, empty and lacking strength. 3. adj. said of a fruit shell: whose seed or inner substance is dry or rotting. 4. adj. useless, futile or ineffective. 5. adj. arrogant, presumptuous, envanecido. 6. adj. Insubsistente, durable or stable. 7. adj. It has no basis, reason or evidence. 8. m. Arq. Part of the wall or factory in which there is no pedestal or support to the ceiling or vault; e.g., the Hollows of the bays or doors and Windows. in vain. 1. loc. Advisor. Unnecessarily, without achievement and effect. 2. loc. Advisor. Without necessity, reason or justice. una vain and two empty. 1. expr. Colloq. U to warn speaking much and without substance. ? V. head vain wax vain