created sense approved 砥 · dǐ · baffle
砥
dǐ
baffle
a rock or pier in a river that breaks the flow of water or provides structural support
砥柱中流常用来比喻在危难中支撑局势的力量。
created sense approved 砥 · dǐ · whetstone
砥
dǐ
whetstone
a fine-grained stone used for sharpening or smoothing tools
他在砥石上磨快了刀刃。