novaculite
Alternative form of sluggardize
plural of daintrel
(geology, mineralogy) A variety of chert, very rich in quartz, that has been used to make whetstones
(medicine) The time between the start of penetrative vaginal intercourse and male ejaculation inside the vagina.
刃物職人は優れた砥石を作るために、砥石に用いられる珪石が非常に豊富なチャートの一種を丘で探した。
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