Pronunciation: [ɡˈe͡ɪv wˈɒn ɐ blˈak ˈa͡ɪ] (IPA) 
The phrase "gave one a black eye" is spelled in English as /gəv wʌn ə blæk aɪ/. The word "gave" is pronounced with a soft "g" sound like in "get," followed by a short "a" sound and a "v" sound. "One" is pronounced with a long "o" sound and a muted "n" at the end. "Black" is pronounced with a short "a" sound, a softened "k" sound, and a mute "c" at the end. "Eye" is pronounced with a long "i" sound.
The phrase "gave one a black eye" means to physically harm or injure someone by striking or hitting them specifically in the eye area, resulting in a discoloration or bruise that appears black or darkened. The term is primarily used figuratively to convey a negative consequence or setback that affects someone's reputation or public image.
In a more literal sense, the phrase describes a scenario where a person receives a blow or punch to the eye or surrounding region, causing blood vessels to break and resulting in the accumulation of blood beneath the skin. This hematoma turns the area around the eye dark, often appearing black or bruised. Such an injury can occur due to accidental accidents or intentional acts of violence.
However, when used metaphorically, "gave one a black eye" refers to an action or event that negatively impacts a person's reputation, standing, or credibility. It could connote an embarrassing incident, a public failure, or a setback that reflects poorly on an individual or an organization. Colloquially, it may also signify any action or situation that damages someone's public image or impairs their credibility, causing a loss of trust or faith in their abilities, character, or integrity.
