日の丸【ひのまる】
outline of the Sun (esp. represented as a red circle), the Japanese flag
丸い【まるい】
round, circular, spherical, curved, smooth, harmonious, calm, peaceful, amiable, amicable
弾丸【だんがん】
bullet, shot, shell
丸み【まるみ】
roundness, rotundity, mellowness, maturity
丸々【まるまる】
plump, rotund, chubby, entirely, completely, wholly
丸める【まるめる】
to make round, to roll up, to curl up, to seduce, to cajole, to explain away, to round off (a fraction), to shave (one's head), to lump together