Worldwide, Senichak (Senichak , Сеничак ) is an extremely rare unknown gender first name. Much more frequently, Senichak is the last name as well as the forename.
Сенишак, and Сенічак
Peter
, Сеничак 
) is an extremely rare unknown gender first name. Much more frequently, Senichak is the last name as well as the forename.