A person who holds a position auxiliary to another and assumes some of the superior's responsibilities
Giving or able to give help or support
She couldn't be late again for her job as an assistant general manager of a fast food joint, or she'd be fired.
The assistant asked some further questions.
The photographer issued them a few directions, with his assistant helping them pose.
Assistant Director Summerfield announced to the press at the height of the search, more than two hundred officers and volunteers were involved.