spencer   
akanjo baliaka
a spencer or jacket which opens in front, such as is worn by the Betsimisaraka. [Richardson 1885]
akanjo manatrika
[atrika, in front of.] A woman's spencer which opens in front. [Richardson 1885]
akanjo miamboho
[amboho, at the back.] A woman's spencer which opens at the back. [Richardson 1885]