nighthawknight‧hawk /ˈnaɪthɔːk $ -hɒːk/ noun [countable] American English informal 
someone who enjoys staying awake all night SYN night owl
someone who enjoys staying awake all night SYN night owl- Harper's Ferry
- Harpers & Queen
- harpist
- harpoon
- harpsichord
- harpsichordist
- harpy
- harridan
- Harrier jump jet
- Harrisburg
- Harris, Frank
- Harrison, Benjamin
- Harrison, George
- Harrison, William Henry
- Harris poll
- Harris, Richard
- Harris Tweed
- Harrods
- Harrow
- harrow
- harrowing
- harrumph
- harry
- Harryhausen, Ray
- Harry, Prince