Meaning of Love?

I learned in standard 12th English reader book that Love means sacrifice (Chapter 2nd).

Today again I read good meaning that Love means reciprocating...as below

One great saint once gave an example that if a person owns everything on the earth, if he is the proprietor of everything on earth, but he is the only person alive on Earth, will he enjoy? You have all the cars, you have all the buildings, you have all the money, you have all the food, you have everything but you are the only person and there is no competition. If one little bird came and landed on that finger that would be the most dear thing to you in life because at least the bird is alive and can reciprocate with you to some extent. You could love the bird and the bird may be able to somehow show some affection to you. Yes? You can’t love buildings or cars or money because there is no reciprocation. So love means reciprocation. The soul’s nature is to love God. Pure love of God is dormant within the heart of every living being. It’s our nature, it’s our essence but we’ve forgotten, we are so much diverted, so much distracted.

A mother, she’ll work twenty-four hour shifts for her little baby. Yes? How many men will work twenty-four hour shifts for their boss? Some may but they won’t be very happy about it but a mother is on call twenty-four hours a day, not only on call but usually busy. I’ve seen babies cry. Ladies come to me and say they haven’t slept for days, the baby is crying…What to speak if you have twins or three babies! She’s not getting paid a paisa but she has the satisfaction because she is motivated by love and affection. Love is a more powerful force than greed or egoism.