What is attachment as per Buddhism?

Is attachment some kind of love? Parental love, a smile that comes when we get a glance of a toddler, when we spent money on good for our beloved one's then that time what is it? As per my perception i wish to ignore all of this, attachment. But i am actually unaware of the factual attachment. Am i wishing good? I am open for good, for change as i am aspired to become a good or maintain a fair balance between good and bad in myself to lead a good way of living. Literally i have came to know that i need a fair personal practical advise.