石木 is read as いしき (ishiki) and means stone tree.
いしき
ishiki
きのしたせき
kinoshitalite
もくかせき
fossil wood
ぼくせき
trees and stones
ひとぼくせきにあらず
man is not made of stone
きぶつかなぶついしぼとけ
inflexible people
いしがみ
stone which is worshipped
いしむろ
stone hut
いしだん
(flight of) stone steps
せきえい
quartz
こく
measure of a Japanese-style boat's loading capacity (approx. 278.26 liters)
いし
flint (in a lighter)
いしあたま
hard head (like a rock)