‘泳镜’ (yǒng jìng) literally combines ‘泳’ (yǒng), meaning ‘swimming’, and ‘镜’ (jìng), meaning ‘mirror’ or ‘glasses’. Though ‘镜’ often refers to mirrors, in compound words it frequently denotes optical devices for viewing—like ‘眼镜’ (eyeglasses) or ‘望远镜’ (telescope). Thus, ‘泳镜’ specifically means ‘swimming goggles’: protective eyewear designed to seal around the eyes, allowing clear underwater vision while shielding eyes from chlorine, salt, or bacteria in pools and open water.

This word is commonly used in sports, fitness, and aquatic safety contexts. It appears in swimming instruction, equipment lists, and health advisories about eye hygiene during water activities. Unlike generic terms like ‘护目镜’ (protective goggles), ‘泳镜’ implies design features such as adjustable straps, anti-fog lenses, and watertight seals tailored for swimming. It’s a standard, neutral-term noun—neither formal nor colloquial—and rarely appears in metaphorical usage.