1. a speech that is given to encourage others
give a pep talk
A 'pep talk' is a speech given in order to inspire, encourage motivate others. A pep talk may be given to a team before a sports event for example in order to make them feel more confident, or you might deliver a pep talk to a team or employees in the workplace in order to motivate them. "After his pep talk, the players were ready to take on the other team." "I like to give my sales team pep talks throughout the day so they feel motivated to reach their targets."