skull-buster

and skull-popper

1. n. a difficult course in school or college. The course was a skull-buster, and I had to drop it.

2. n. a police officer. (Refers to the striking of skulls.) Two skull-poppers came up and started asking questions.

Name	Pronounced	Usage
Elnur	-	Azerbaijani
Murphy	MUR-fee	Irish, English
Vanamo	VAH-nah-mo	Finnish
Rayen	-	Native American, Mapuche, Spanish (Latin American)
Melicent	-	English (Archaic)
Mihaela	mee-hah-YE-lah (Romanian), mee-HAH-el-ah (Croatian)	Romanian, Slovene, Croatian, Macedonian