圧し石[oshiishi] stone weight
一石[isseki] one game (of go)
一石二鳥[issekinichou] killing two birds with one stone
英国石油[eikokusekiyu] British Petroleum
下石[shitaishi] nether millstone

化粧石鹸[keshousekken] toilet soap
化石[kaseki] fossil
化石学[kasekigaku] paleontology
化石層[kasekisou] fossil bed
化石燃料[kasekinenryou] fossil fuel

生齧り[namakajiri] superficial knowledge
聞き齧る[kikikajiru] to have a smattering knowledge of
齧り散らす[kajirichirasu] to gnaw at and scatter around
齧りつく[kaburitsuku] to bite into
齧歯類[gesshirui] rodent

齧る[kajiru] to chew
脛齧り[sunekajiri] sponging off one's parents
食い齧る[kuikajiru] to nibble at
齧歯目[gesshimoku] Rodentia
親の脛を齧る[oyanosunewokajiru] to depend on one's parents' (financial) support