ひもじい思い[himojiiomoi] state of feeling hungry
成吉思汗[jingisukan] Japanese mutton and vegetable dish
意思決定機関[ishiketteikikan] decision-making body
意思[ishi] intention
意思決定[ishikettei] decision-making

意思表示[ishihyouji] declaration of intention
一思いに[hitoomoini] instantly
引込思案[hikkomijian] reserved
危険思想[kikenshisou] dangerous thoughts
旧思想[kyuushisou] old-fashioned idea

研鑽[kensan] diligent study
鑽り火[kiribi] striking sparks with flint and steel or by rubbing sticks together (usu. to start a fire)
鑽孔機[sankouki] boring machine
鑽り出す[kiridasu] to quarry

鑽孔[sankou] boring
鑽る[kiru] to start a fire (with wood-wood friction or by striking metal against stone)
自己研鑽[jikokensan] self-improvement
火鑽り[hikiri] hand drilling (to start a fire)