παλικάρι or παλληκάρι (different spelling) means:
1. good looking young man.
Example: Ο γιος της μεγάλωσε και έγινε παλικάρι. = Her son has grown up and he became a beautiful young man.
2. brave, courageous
Example: Ο στρατιώτης ήταν παλικάρι, δεν δίστασε να ρισκάρει τη ζωή του. = The soldier was brave, he did not hesitate to risk his life.
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.