Things to remember. 1  Caffeine is a stimulant drug that acts on the brain and nervous system. 2  Like many other drugs, it is possible to become dependent on caffeine.  Pregnant women, athletes and children should limit their intake of caffeine.
hobby1. 1  an activity or interest pursued for pleasure or relaxation and not as a main occupation: Her hobbies include stamp-collecting and woodcarving. 2  a child's hobbyhorse. 3  Archaic. a small horse. 4  ride a hobby, to concern oneself excessively with a favorite notion or activity. Also, ride a hobbyhorse.
verb. 1  1no object Engage in activity for enjoyment and recreation rather than a serious or practical purpose. 2  2with object Take part in (a sport) âI play squash and badmintonâ. 3  3no object, usually with negative Be cooperative. 4  4with object Represent (a character) in a theatrical performance or a film.