The khukuri is a traditional Nepalese knife, and is part of the equipment of Nepalese Gurkha soldiers:
In 2001 I began my collection of Nepalese khukuris with a British Army Service model from Himalayan Imports/BirGorkha Khukuri:
Since then I've collected a number of khukuris, both modern and antique--though this number has been sadly rather small due to my graduate student salary, I have had the opportunity to view a variety of beautiful examples of antique khukuris of my friends on various forums (e.g. Bladeforums, Sword Forum, IKRHS etc.). Some of the most (linguistically) interesting ones began to appear in 2002/3 when Atlanta Cutlery [AC] started selling old khukuris from a hoard they'd acquired from Nepal. A number of these khukuris have were found to have rather mysterious inscriptions in Nepali stamped on the blade spines.
Before turning to how these inscriptions were deciphered, do let's first consider the etymology of khukuri (because this is a linguistics/philology blog after all).
Note: I have never seen an etymology given for Nepali khukuri. Turner  in his Indo-Aryan dictionary surprisingly does not treat khukuri (this is particularly surprising since he served as a Gurkha officer). Thus the following etymology is not a rehearsal of any previous study.
The ultimate Proto-Indo-European root of Nepali khukuri (खुकुरी) must be PIE *kes- "to scratch" (see Pokorny :1.585, Watkins :41). It is from the zero-grade form of this root with -eu- extension (i.e. *kseu-) that derive both Greek ξυρόν (ksurόn) "razor" and Sanskrit kṣurá- "razor" (in the Ṛgveda), "sharp barb of an arrow" (in the Rāmāyaṇa), as well as Sanskrit kṣurī "knife, dagger".
From Sanskrit kṣura and kṣurī come a number of words in Modern Indo-Aryan languages for "knife, dagger" , though these are mainly ch- forms (rather than kh- forms, see below), and even late Sanskrit shows ch- forms like churī/chūrī "knife, dagger", also churikā- (in the Kathāsaritsāgara). Modern Indo-Aryan forms include: Hindi churā "dagger, razor", Nepali churā "razor", Punjabi churā "large knife", churī "small knife", Gujarati charo "large knife", Bengali churi "knife" (and Assamese suri "knife"), as well as Armenian Gypsy/Romani čhuri "knife" --- and, interestingly, also