heap - holo
- high-frequency oscillator
- high-grade
- high-level
- high-level language
- high-level waste
- high-minded
- high-octane
- high-octane gasoline
- high-paid
- high-performance
- high-pitched
- high-powered
- high-precision
- high-pressure
- high-pressure fuel pump
- high-pressure lamp
- high-pressure turbine
- high-pressure vessel
- high-quality
- high-ranking
- high-resistance
- high-rise
- high-rise building
- high-speed
- high-speed computer
- high-speed flight
- high-speed modem
- high-speed steel
- high-strength
- high-strength steel
- high-tech
- high-technology
- high-tension
- high-voltage
- high-voltage discharge
- high-voltage substation
- high-yield
- higher
- higher algebra
- higher authority
