1. (n) Also known as a babushka doll. A matryoshka doll is Russian nesting doll that decreases in size and are put into another.
2. (n) A Vocaloid song sung by Hatsune Miku and Gumi
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1. Showing a deliberate and obstinate desire to behave in a way that is unreasonable or unacceptable.
2. Contrary to the accepted or expected standard or practice.
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