Meetings are not an interruption of work, they are the team's work. Each meeting should have an agenda which should be distributed ahead of time. Minutes should be taken during each meeting and approved in the next meeting. There are several good references on team meetings. Teams may choose to create a glossary of terms document to store definitions of terms.
Definitions help create a commonly understood and shared language.
Team members may have a difficult time communicating when their mental models differ because of language. In addition, working through definitions of terms as a team, may reduce future conflict because of language differences. Deliverables are the products produced by the team. The deliverables should be clear and understood by team members. A schedule chart describing who is responsible for each deliverable and when it is due is very important.