1. people who make plans, especially for the development of land, cities, or organizations
2. books or electronic devices used for organizing schedules and appointments

Examples

• City planners are designing a new park for the downtown area.
• The urban planners met to discuss the housing development project.
• Wedding planners help couples organize their special day.
• She bought two planners to keep track of her work and personal schedules.
• Digital planners have become popular among students.
• The event planners coordinated every detail of the conference.
• Many people prefer paper planners over electronic ones.