Merriam-Webster Online Dictionary
commitment (noun)1.
a) an act of to a charge or trust as - committing
(1) a consignment to a penal or mental institution
(2) an act of referring a matter to a legislative - committee
b) - mittimus
2.
a) an agreement or pledge to do something in the future , especially an engagement to assume a financial obligation at a future date
b) something pledged
c) the state or an instance of being obligated or emotionally - impelled a commitment to a cause