slughorn
Noun
Meaning
(nonstandard, rare) A wind instrument.
Obsolete spelling of slogan (“a battle cry among the ancient Irish or highlanders of Scotland”) [17th–19th c.]
Source: en.wiktionary.orgExamples
Harry Potter and the Half-Blood Prince In the sixth book, Dumbledore fetches Harry from Privet Drive and takes him to persuade Horace Slughorn to rejoin the Hogwarts staff.
The notes greatly bolster Harry's performance in Potions, so much so that he impresses Slughorn.