The 'bala' part I don't know, but 'laika' means barker in Russian. The first animal sent into space was a Russian dog named Laika. Perhaps bala means stick or wood.
The triangular one is called a Balalaika. There are several rounded ones by different names.
Balalaika
The balalaika originated from Russia.
click here: balalaika playing
click here: balalaika playing
The balalaika is a stringed instrument that seems to have been derived from the domra. The first mention of the balalaika was in a document in 1688.
The duration of Balalaika - film - is 1.7 hours.
Nokia Balalaika Show was created in 1995.
Balalaika - film - was created on 1939-12-29.
Global Balalaika Show was created in 2003.
The duration of Total Balalaika Show is 3420.0 seconds.
There are many tutorials on the web where one can learn to play the balalaika. One looking to learn to play the balalaika should take advantage of on the web sources such as YouTube video tutorials, Get-Tuned, and and eHow.