1. people who are very eager, enthusiastic, or ambitious
Usage: informal; chiefly Canadian
2. professional mourners who wail at funerals
Usage: chiefly Irish

Examples

• The keeners in the class always raised their hands first.
• She was one of those keeners who stayed after school to help teachers.
• The keeners at the funeral wailed loudly for the deceased.
• All the keeners signed up for extra credit assignments.
• The traditional Irish wake included keeners who mourned publicly.
• He avoided the keeners who made everyone else look bad.