The Proto-Indo-European word *skolmehₐ
Word *skolmehₐ
Meaning sword
See also Proto-Indo-European: *(s)kel- ‘to cut, to split apart’

Comments
Mallory J.P. and Adams D. (2006)

Other words that might be of interest
*ghostis ‘enemy, stranger, guest’, *koro- ‘war’, *k̂at- ‘battle’, *des- ‘enemy’