clay·more 
(klāmôr′)
(klāmôr′)n.
1. A claymore mine.
2. A large, double-edged broadsword formerly used by Scottish Highlanders.
[Scottish Gaelic claidheamh mór, large sword : claidheamh, sword (from Old Irish claideb) + mór, great (from Old Irish; see mē-3 in the Appendix of Indo-European roots).]