holler - shout
The informal word ‘holler’ means to cry out, typically in order to attract attention or to express pain. By extension, it can also be employed in relation to a gripe or complaint somebody might make. Most commonly used in American English.
I’ve shown you the basics on how to operate the equipment, but if you have any further questions, just give me a holler.
The police officer on his patrol said that he heard somebody hollering for help and rushed to their aid.
Brian is always quick to holler about other people not pulling their weight at work, yet he is hardly the most productive member of staff.