This is the 8972nd most frequent Russian word.
раков
The word "раков" is the genitive plural form of "рак," meaning "cancers" (medical) or "crayfish" (animals), depending on context.
The word 'раков' is used in the context of referring to crayfish, specifically in the plural form in the genitive case.
На рынке продают свежих раков.
Fresh crayfish are sold at the market.
Here, 'раков' refers to crayfish in a countable and culinary context, again in the plural form, genitive case used after 'несколько'.
Купи несколько раков для ужина.
Buy a few crayfish for dinner.
In this sentence, 'раков' denotes the object of the activity, crayfish, in a direct context of catching them, using plural form and accusative case.