Final answer:
The bolded words in the line from the poem use the literary technique of metaphor.
Step-by-step explanation:
The literary technique used in the bolded words is metaphor. A metaphor is a figure of speech that directly compares two unrelated things, implying a similarity between them. In this line from the poem, the blood running like wine creates a vivid and powerful image, comparing the flow of blood to the flow of wine.
Learn more about Metaphor in poetry