Definition
To render something into active use; to provide an impetus to something.
How People Actually Use It
IGYML (Pronounced iggy-mill) Short for "I Give My Life To You" is an acronym based term which is predicted to be widely used when one significant other wishes to express to their special someone just exactly how much they mean to them or the intensity to which they have given their heart to them.
"I love you, my sweetheart, you mean the world to me... IGYML (i give my life to you)!"
Source: Urban Dictionary