刺さる[sasaru] to stick
刺し[sashi] grain thief
刺し貫く[sashitsuranuku] to pierce
刺し殺す[sashikorosu] to stab to death
刺し傷[sashikizu] a stab

刺通す[sashitoosu] to stab
刺し網[sashiami] gill net
刺す[sasu] to pierce
刺客[shikaku] assassin

脊椎[sekitsui] spine
脊椎動物[sekitsuidoubutsu] vertebrate
椎茸[shiitake] shiitake mushroom (Lentinula edodes)
無脊椎動物[musekitsuidoubutsu] invertebrate
胸椎[kyoutsui] thoracic vertebra

椎骨[tsuikotsu] vertebra
椎間板[tsuikanban] intervertebral disk
頚椎[keitsui] cervical vertebrae
腰椎[youtsui] lumbar vertebrae
脊椎破壊[sekitsuihakai] spina bifida

穿ちすぎた[ugachisugita] farfetched
穿山甲[senzankou] pangolin
穿刺[senshi] puncture
穿通[sentsuu] penetration
下穿[shitabaki] undershorts

穿く[haku] to put on (or wear) lower-body clothing (i.e. pants, skirt, etc.)
穿鑿[sensaku] scrutiny
穿孔[senkou] perforation
穿孔機[senkouki] drill
穿つ[ugatsu] to drill

ギックリ腰[gikkurigoshi] strained back
丸腰[marugoshi] unarmed
及び腰[oyobigoshi] bent back
けんか腰[kenkagoshi] belligerent
腰掛る[koshikakeru] to sit (down)

腰を下す[koshiwoorosu] to sit down
腰かけ[koshikake] seat
腰巻[koshimaki] loincloth
腰元[koshimoto] chamber maid