Definitions:

1. A pair of coverings for the lower half of the legs, often worn in the past but worn now mainly by people who go walking or climbing in order to stop earth and water from entering their boots. NOUN
   • The hikers wore gaiters to protect their legs from thorns and debris.
2. A protective covering worn over the lower part of the leg and ankle, often extending over the top of a boot, used to keep out dirt, debris, snow, or water, particularly during outdoor activities. NOUN
   • He wore gaiters to keep snow from getting into his boots while trekking through the mountains.

Synonyms:

• chaps
• leg covering
• legging
• overshoe
• puttee
• spat