1) Cozy porch seat 2) Current White House feature 
A rocking chair is a piece of furniture. Rocking Chair, Rockin` Chair, or Rocking Chairs may also refer to: ... A rocking chair or rocker is a type of chair with two curved bands (also known as rockers) attached to the bottom of the legs, connecting the legs on each side to each other. The rockers contact the floor at only two points, giving the occupant the ability to rock back and forth by shifting his/her weight or pushing lightly with his/her feet. Rock...
• (n.) A chair mounted on rockers, in which one may rock.
Chair resting on curved runners (known as bends) connected to the front and back feet. Rocking chairs were introduced in the USA and Britain in the 1760s, but it was the Americans, whose attitudes and tastes were more relaxed than those of the Georgians and Victorians, who led rocking-chair fashions over the next century.
Rock'ing-chair` noun A chair mounted on rockers, in which one may rock. 
[n] - a chair mounted on rockers
noun a chair mounted on rockers