urchin

noun
1
a young child who is poor and dirty, often one who has no home
کودک فقیر, کودک بی‌خانمان, طفل سرگردان, بچه‌ٔ کار
2
a small sea creature with a round shell that is covered with spikes
خارپشت دریایی, توتیای دریایی