Final answer:
The phrase 'smoulder the fallen roses of out-lived minutes' is a metaphorical expression that poetically describes the lasting impact of moments that have passed.
Step-by-step explanation:
The phrase "smoulder the fallen roses of out-lived minutes" uses a type of figurative language known as a metaphor. In this phrase, 'fallen roses' symbolize moments that have passed and 'smoulder' suggests that these moments continue to have an effect, slowly fading away much like embers of a fire. This is a poetic technique that creates a vivid image in the reader's mind, allowing them to feel the emotional resonance of time passing and moments lingering.