What does does it mean by A proud look?

Answer 1

To feel proud or pride about something means to feel pleasure or satisfaction, in something honorable or that you credit to yourself. So you might be proud of your child because the child reflects on you. An award you won is pleasurable. It's satisfying to be singled out. When proud, you smile, often a beaming smile, your eyes "light up", you feel and show excitement, your cheeks may be red from blushing, you might perspire from nervousness and excitement, and often, you can't help telling everyone who will listen! So "a proud look" contains all of those elements, more or less. Many parents simply broadly smile when proud of a child.