to come, to arrive; a rare, poetic word for coming, and in its causative use, to bring.
This is a poetic, somewhat old-fashioned word for coming or arriving. Hebrew already had an everyday, extremely common verb for coming and going (בּוֹא); this one is its rarer cousin, appearing almost entirely in poetry and prophecy, in books like Job and Isaiah and the Psalms, and in old poems such as the blessing of Moses.
The single idea of coming or arriving stretches naturally across everything the word describes. A person, a people, or God can "come"; a morning, a stretch of years, or a dreaded day can "come"; trouble and terror can "come upon" someone; and "the things to come" are simply the future events that arrive in their time. English does the same thing with the word "come," which is why translations almost always render it that way.
In its causative use the word means "to bring," that is, to make something come: bringing water to the thirsty, or summoning wild animals to gather. This is not a second word but the same verb, aimed at causing the arrival rather than doing it.
It is also the same word as the ordinary Aramaic verb for coming used in Daniel and Ezra, and it has close relatives in other Semitic languages. That foreign, elevated flavor is part of why a poet reached for it instead of the common verb.