urchins is a form of:

Urchin



noun
1.
(a small mischievous child same as SEA URCHIN) ក្មេងខិលដែលលេងតាមថ្នល់ (ប្រុស, ស្រី), homeless urchin ក្មេងក្រគ្មានផ្ទះសំបែង, sea urchin សត្វសមុទ្រម៉្យាងមានបន្លាជុំវិញ
ENGLISH MEANING
noun
1.
A sea urchin.
2.
A mischievous elf supposed sometimes to take the form a hedgehog.
3.
A pert or roguish child; -- now commonly used only of a boy.
4.
One of a pair in a series of small card cylinders, arranged around a carding drum; -- so called from its fancied resemblance to the hedgehog.
adjective
1.
Rough; pricking; piercing.
1.
A hedgehog