Webster's Revised Unabridged Dictionary · 1913

Ma

Ma (ma) , noun

[Compare Mamma.]

1.
A child's word for mother.
2.
In Oriental countries, a respectful form of address given to a woman; mother. — Balfour (Cyc. of India)

Ma , conjunction

[Italian]

(Music) But; -- used in cautionary phrases; as, “Vivace, ma non troppo presto” (that is, lively, but not too quick). — Moore (Encyc. of Music)