Mother
M - o - t - h - e - r
M >> is for the million things she gave me
O >> means only that she's growing old
T >> is for the tears she shed to save me
H >> is for her heart of purest gold
E >> is for her eyes, with love-light shining
R >> means right, and right she'll always be
Put them all together, they spell
A word that means the world to me