bulker

plural bulkers

1. nauticalA bulk dry goods cargo ship.

   The bulker began to swerve from side to side, as sharply as it could, creating large waves behind it, sending a churning wake towards the pirate boats.

   2010, Duncan Falconer, Pirate

2. nauticalA person employed to ascertain the bulk or size of goods, in order to fix the amount of freight or dues payable on them.
3. A person who bulks (gains body mass).
4. Anything, such as a dietary supplement or an exercise, that helps a person to gain body mass.