an egg

an egg, including fish roe / the beginning or start of something (compare the uses of English terms kernel and seed) / a beginner or rookie at something

ball / bulb (as in a light bulb) / (slang, electronics) vacuum tube, valve / (baseball) pitch

head / counter for large animals

eggshell

bald head

for one's mind to go blank, to freeze

one shouldn't bury one's head in the sand while leaving one's bottom exposed

oval, egg (something shaped like an egg)

Tamagoyaki, a Japanese omelette made from egg.