abacus
US
UK abacus, plural: abacuses, abaci n: (counting instrument)
SC 算盘 suàn pán
TC 算盤
TC 算盤
My grandfather used to use an abacus to do math.
我祖父过去经常用算盘来计算。
abacus, plural: abacuses, abaci n: (architecture: horizontal slab) (建筑)
SC 顶板 dǐng bǎn
The column's abacus has deteriorated and needs to be repaired.
柱体的顶板已经腐蚀，需要修理。