What an LP Has One of on Each Side
Puzzle 1 of Ghost Hunting Hard Pack
Question is: What an LP Has One of on Each Side
and the answer is: GROOVE
Word Meaning:
GROOVE — A long, narrow channel or depression; e.g., such a slot cut into a hard material to provide a location for an engineering component, a tire groove, or a geological channel or depression.
Definitions from Wiktionary.