Final answer:
The phrase in question represents a metaphor for rapid movement, invoked through the imagery of winged flight described in the context provided.
Step-by-step explanation:
The phrase "So wingedly: when we combine therewith" suggests a metaphor for rapid movement. When analyzing the provided context, it becomes apparent that winged flight is being used poetically to describe motion.
The descriptions of spreading wings for flight, soaring into the air, and moving like a shadow across the garden invoke imagery of a quick and graceful motion, indicating that the metaphor is appropriate for rapid movement.
This metaphor encapsulates the essence of flight, from the real instances of birds and insects to the figurative sense of swift, fluid motion as in the allusion to Nike settling onto the ship's prow. Flight metaphors regularly appear in literature to convey a sense of freedom, speed, and elegance.