1. schools or tutoring services that prepare students intensively for examinations
Usage: British English; informal
2. people who study intensively in a short period, especially before an exam
Usage: informal

Examples

• Many students attend crammers to boost their A-level scores.
• The crammers near the university are always busy during exam season.
• She enrolled at one of the local crammers for extra math help.
• These crammers stayed up all night reviewing for the final exam.
• The crammers in the library looked exhausted from studying.
• Private crammers can be expensive but effective for test preparation.