na-adjective, noun which may take the genitive case particle 'no', noun
Describes a zigzag pattern, movement, or shape. Used as a noun, adjectival noun (na-adjective), or prenominal (no-adjective).
道がジグザグに曲がっている。
The road zigzags.
ジグザグの線を引いてください。
Please draw a zigzag line.
Borrowed from English 'zigzag'.