noun

• (mathematics) A formalization of the idea of the motion of particles in a fluid, as a group action of the real numbers on a set.
  "The notion of flow is basic to the study of ordinary differential equations."
• (psychology) A mental state characterized by concentration, focus and enjoyment of a given task.
  "The point about flow is that it is enjoyable. As research has shown "the more often athletes experienced flow, the happier they were." But the second is that entering flow actually improves performance."
• (rap music slang) The ability to skilfully rap along to a beat.
  "The production on his new mixtape is mediocre but his flow is on point."
• (software) The sequence of steps taken in a piece of software to perform some action.
  "login flow"

verb

• (intransitive) To move as a fluid from one position to another.
  "Rivers flow from springs and lakes."
• (intransitive) To proceed; to issue forth; to emanate.
  "Wealth flows from industry and economy."
• (intransitive) To move or match smoothly, gracefully, or continuously.
  "The writing is grammatically correct, but it just doesn't flow."
• (intransitive) To have or be in abundance; to abound, so as to run or flow over.
  "[…] in that day[…] the hils shall flow with milke[…]"

noun

• (Scotland) A bog or mire, especially a rough, waterlogged one.
  "[…] there are other extensive mosses in this district, commonly called flowes, which it is not probable ever will, or ever can be, converted into arable land. Some of these flowes are found to be 20, 25, or 30 feet deep, and are, besides, such a dead level, that the water has little or no descent; and even supposing they should be cast, or burnt to the bottom, standing pools of dirty water could only stand in their place."