Comparative evidence

ḱeh₃, ḱeh₃i̯

• Lat. catus -a, -um ‘clever’, ‘’shrewd’, prudent’, ‘circumspect’ (OLD: 286)

• Lat. cōs -tis, f. ‘a stone for sharpening metal implements’, ‘a whetstone’ (OLD: 452)

References

OLD = Glare, P. G. W. 1968. Oxford Latin Dictionary. Oxford: Clarendon Press.