The marble jar

Original fiction extract.

I wanted the tallest jar for my marbles because the collection looked important in it. Dad suggested the shorter one, which I rejected before trying it. We poured the marbles in. There was ample room above them, even after I added the three large ones from my coat pocket. The tall jar would not fit on the shelf where I wanted to keep them. I chose the smaller jar and began arranging the colours against the glass. It made the collection look rather larger than it had before.

Use your own words to explain what the word “ample” means in this extract.