1) велосипед; ездить на велосипеде 2) математика бицикл
1. имя существительное велосипед Например: racing bicycle — гоночный велосипед mountain bicycle — горный велосипед exercise / stationary bicycle — велотренажёр to ride a bicycle — ездить на велосипеде to get on a bicycle / mount a bicycle — сесть на велосипед to go somewhere by bicycle — поехать куда-либо на велосипеде Синоним(ы): bike, cycle 2. глагол ездить на велосипеде
I. noun Etymology: French, from bi- + -cycle (as in tricycle) a vehicle with two wheels tandem, handlebars for steering, a saddle seat, and pedals by which it is propelled; also a stationary exercise machine that resembles such a vehicle II. intransitive verb (bicycled; bicycling) to ride a bicycle • bicycler noun • bicyclist noun