Shoes that cover the ankle or higher; often used for winter wear or fashion (Japanese loanword from English 'boots').
冬は暖かいブーツがないと足が冷えてしまう。
In winter, if you don't have warm boots your feet will get cold.
彼女は黒いブーツを履いてパーティーに来た。
She wore black boots to the party.
このブーツは防水加工がしてあるから雨の日にも便利だ。
These boots are waterproof, so they're useful on rainy days.