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

hot spring egg; onsen tamago (Japanese soft-boiled egg cuisine)

Tamagoyaki, a Japanese omelette made from egg.

a white-flowered camellia, Camellia japonica

(mildly vulgar) ballsack

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

head / counter for large animals

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

eggshell