The Russian term "bul avka" matches the English term "pin"

other russian words that include "bul" : english :
bul ochnik baker
bul ‘var boulevard
bul ka chunk
bul ka clod
Kabul Kabul
bul ka lump
bul avka needle
other russian words that include "avka" : english :
Kavkaz Caucasus
bul avka needle
angl ijskaya l avka safety pin
borodavka wart