Kyūjitai form of 卵殻

not ... at all

even if ...,...cannot

very, exceedingly, awfully / (before a negative form) not at all, at all, by no means

thin / (figuratively) thin, weak, diluted

husk; shell

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

an ovum

(slang, euphemistic) doujinshi, especially those with adult themes