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Answer variants:
Whistle
Interest
Gazing
Brush
1. \(=\) An object with short pieces of stiff hair, plastic, or wire attached to a base or handle, used for cleaning, arranging your hair, or painting
2. \(=\) Emit a clear, high-pitched sound by forcing breath through a small hole between one's lips or teeth
3. \(=\) To look at something or someone for a long time, especially in surprise or admiration, or because you are thinking about something else
4. \(=\) The feeling of wanting to know or learn about something or someone
