A centimetre is a small unit of length that is equal to one-hundredth of a meter. It is commonly used to measure short distances, like the length of a pencil or the width of a finger. Full definition
Put the pan on the heat, add a couple of centimetres of boiling water and bring to a gentle simmer. (nationalpost.com)
On each face of the cuboid there is a straight red line a whole number of centimetres long going from the mid-point of one edge to the mid-point of another. (newscientist.com)
When the rover zoomed in, it saw rounded pebbles in the conglomerates and in surrounding gravel that were fairly large — up to a few centimetres in diameter. (newscientist.com)