1. embarrassing mistakes, especially obvious errors in speech or writing
Usage: informal
2. large South American monkeys known for their loud calls

Examples

• The student’s essay was full of howlers that made the teacher laugh.
• His speech contained several embarrassing howlers about historical dates.
• The newspaper had to print corrections for the howlers in yesterday’s article.
• She made a few howlers during her presentation but recovered quickly.
• Howlers are among the loudest animals in the rainforest.
• The zoo’s howlers can be heard from across the park.
• Researchers study howlers to understand primate communication.