1 This helps keep your upper back straight while having a slight arch in your lower back. 2  Slowly lift by straightening your hips and knees (not your back). Keep your back straight, and don't twist as you lift.  Hold the load as close to your body as possible, at the level of your belly button.
Definition of birthday. 1  1a : the day of a person's birthb : a day of origin. 2  2 : an anniversary of a birth her 21st birthday.
anniversary (plural anniversaries) 1  Of a significant event, a day that is an exact number of years (to the day) since the event occurred. ( 2 loosely) A day subsequent in time to a given event by some (especially significant) factor other than a year (especially as prefixed by the amount of time in question).