The name Toma is a boy's name meaning "twin".

4 Letter Boy Names

Names Ending in A for Boys

Toma is one of the handful of names that has different versions for boys and girls. For boys, it's the Romanian and Croatian short form of Thomas. 

The name Toma is a girl's name of Italian origin meaning "date palm tree".

If you're looking for an honor name for grandpa Tom, this could be a good choice. It's also used as a male short form of the name in Eastern Europe.