GeV stands for GigaelectronVolts, a tiny unit of energy (approximately 0.00000000016 Joules). So to clarify that further, making use of mass-energy equivalence (yes, E = mc2) the Higgs mass is approximately 0.000000000000000000000000002kg - I think I have my zeroes correct there - an excellent use of both work time and work's calculator. Though of course this is only the particle element, it is expected that similar to light it will appear to co-exist as both a wave and a particle.
If anybody is really interested in this, or has questions - I can do my best to answer (4th year of an Astrophysics degree).