heads-upˌheads-ˈup noun [singular] informal 
a warning that something may happen: 
Here's a heads-up for investors in real-estate stocks.
a warning that something may happen: Here's a heads-up for investors in real-estate stocks.- photo
- photo-
- photobombing
- photo booth
- photocall
- photocopier
- photocopy
- photocopying
- photoelectric
- photoelectric cell
- photo finish
- Photofit
- photogenic
- photograph
- photographer
- photographic
- photographically
- photographic memory
- photography
- photojournalism
- photon
- photo opportunity
- Photorealism
- photosensitive
- photosensitize