the owner or manager of a plantation
"The new planter refused to sell his land despite the falling prices for cotton."
a worker who puts or sets seeds or seedlings into the ground
"The young planter carefully placed each tomato seedling into the soft soil while the sun began to set over the field."
a decorative pot for house plants
"She bought a colorful ceramic planter to hold her new succulent on the windowsill."
One who plants something.
"The local planter spent his entire morning carefully transplanting seedlings into the garden beds."