Definition of "blackens" [blackens]

• Third-person singular simple present indicative form of blacken. (verb)

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• "The very word blackens before our eyes with necromantic characters -- again we plunge into its gulfs desirous of what we dread -- again, "in pleasure high and turbulent," we climb the cliffs of Cairngorm."
• "Quite roughly speaking, as may be deduced from what has already been said on this subject, the luminous flame of acetylene "blackens" a ceiling at about the same rate as a coal-gas burner of the best Welsbach type."
• "Next up is Thomasina Miers' roast tomato salsa, from Mexican Food Made Simple, which blackens the tomatoes, garlic and chillies in a searingly hot pan first."