暗中摸索[anchuumosaku] groping in the dark
家宅捜索[katakusousaku] premises search
検索[kensaku] looking up (e.g. a word in a dictionary)
鋼索[kousaku] cable
索引[sakuin] index

索具[sakugu] rigging
索条[sakujou] cable
索条鉄道[sakujoutetsudou] cable railway
索然[sakuzen] dry

脊髄[sekizui] spinal cord
脊椎[sekitsui] spine
脊椎動物[sekitsuidoubutsu] vertebrate
猫脊[nekoze] bent back
脊広[sebiro] business suit

脊骨[sebone] spine
脊負う[shou] to be burdened with
無脊椎動物[musekitsuidoubutsu] invertebrate
脊柱[sekichuu] spinal column