A soft, elastic ball with a diameter of approximately 35 to 85 centimetres, used in physical therapy and exercise.

plural of exercise machine

A course of action doomed to be futile.

plural of exercise book

Alternative form of exercise bicycle.

A stationary exercise machine with pedals, saddle, handlebars arranged like a bicycle.

(medicine) A deposit of bony matter in the soft tissues, produced by pressure or exertion.

plural of exercise bone

(military, historical) The military exercise by which soldiers are taught the use of their muskets and other arms.

Used other than figuratively or idiomatically: see exercise, for, the, reader. / (by extension) A matter left to the addressee's judgement to decide.