To know any Vedic word, one will have to take into consideration the fact that as God is formless so is the Vedvani of all four Vedas and so is "Swaha". Therefore the printed Vedas are not Vedvani, it is called Samhita and Samhita can be destroyed whereas
Vedvani is eternal. The pious, eternal and immortal word "Swaha" is recited/pronounced invariably in every Yajyen/havan at the end of mantra. It has got a prayer to God with some meanings. The meanings are explained below. First word will be in Hindi and then it will be explained in English, please.