Noun
1. complete and wholehearted fidelity
2. a ceremony in which something (as a building) is dedicated to some goal or purpose
3. a message that makes a pledge
4. a short message (as in a book or musical work or on a photograph) dedicating it to someone or something
5. the act of binding yourself (intellectually or emotionally) to a course of action;
"his long commitment to public service""they felt no loyalty to a losing team"