Compounds

(archaic, literary) to sleep with clothes overturned, as to meet their longed-for partner in a dream

(literally) a beautiful single red flower that blooms within a field of trees and grass / (figuratively) something unique that stands out among many other things

You should treasure every encounter, for it will never recur.

vicissitudes, the way that the world or a person prospers one day and declines the next

dotting the i's and crossing the t's

successive series of questions and responses

(music) perfect fifth (interval between the first and second overtones or of seven semitones)

color fastness

(physics) absolute zero (coldest possible temperature, -273.15° Celsius)