Merriam-Webster's Collegiate® Dictionary, 11th Edition
OVAL
I. noun
Date: 1570
an oval figure or object, a racetrack in the shape of an oval or a rectangle having rounded corners,
II. adjective
Etymology: Medieval Latin ovalis, from Late Latin, of an egg, from Latin ovum
Date: 1577
having the shape of an egg, ovality noun ovally adverb ovalness noun