Humpty Dumpty-shaped is a term used to describe something that is round and egg-like in shape. It is derived from the nursery rhyme character, Humpty Dumpty, who was famously described as an egg. The crossword solutions for this term are 'OVOID' and 'OVATE', both of which refer to shapes that are similar to an egg. OVOID is defined as having a three-dimensional shape that is rounded like an egg, while OVATE is defined as having a two-dimensional shape that is oval or egg-shaped.