This is the 361st most frequent Turkish word.
kasım
"Kasım" means "November" in English.
The word 'Kasım' here refers to a specific month in the Gregorian calendar, namely 'November'.
Kasım ayı her zaman soğuktur.
The month of November is always cold.
In this context, 'kasım kasım' is a figurative expression emphasizing a strong emotional discomfort or tension.
Onu böyle görmek içimi kasım kasım kasıyor.
Seeing them in this way makes me feel nervously uneasy.
Here, 'Kasım' serves as a proper noun, being the name of a person in the sentence.