Answer: The definition of "ascend" is rise.
Step-by-step explanation: The word "ascend" is a verb and its meaning is "to rise" or "to move upward". Moreover, in this excerpt from the Iroquois Constitution, "ascend" has been used together with the modal verb "shall", which expresses a strong assertion, and the adverb "ever." Furthermore, "ascend" is describing "The smoke of the confederate council fire", which is the subject of the sentence.