"Noctural" is probably misspelled. Trying nocturnal instead Definition of nocturnal
nocturnal has definitions from the field of biology
1
[ adjective ] (biology) belonging to or active during the night

Examples

"nocturnal animals are active at night" "nocturnal plants have flowers that open at night and close by day"

2
[ adjective ] of or relating to or occurring in the night

Examples

"nocturnal darkness"

3
[ adjective ] of or during or relating to the night

Examples

"a nocturnal journey" "nocturnal stillness" "nocturnal predators"

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