from The Century Dictionary.
- Booming; humming.
- Convexly round, like a segment of a bomb; spherical.
Sorry, no etymologies found.
I am inclined to the supposition that the obvious outward signs, the round head, bombous forehead, furry skin, and diminutive size of the pygmies are the outcome of an inward physiological condition peculiar to them, which has enabled them to resist disease or to eat certain kinds of food, or possibly to develop great mental acuteness, and so has led to the establishment of these peculiar small people as a race, without their smallness itself having anything to do with their selection and preservation.