bomb / (fishery jargon) bivalve shell that contains mud instead of flesh

history / the study of history

(physics, chemistry) atom

(informal) male virgin

(obsolete, slang) a "modern boy"; a young man dressed in exotic Western fashions

sissy (an effeminate boy or man)

【Conjunction】after; on the basis of; upon

upper, over

the first volume in a two- or three-volume set

the start / a high place; the top / one with higher rank