From WordNet (r) 3.0 (2006) [wn]:
planter
n 1: the owner or manager of a plantation [syn: planter,
plantation owner]
2: a worker who puts or sets seeds or seedlings into the ground
3: a decorative pot for house plants
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Planter \Plant"er\, n.
1. One who, or that which, plants or sows; as, a planterof
corn; a machine planter.
[1913 Webster]
2. One who owns or cultivates a plantation; as, a sugar
planter; a coffee planter.
[1913 Webster]
3. A colonist in a new or uncultivated territory; as, the
first planters in Virginia.
[1913 Webster]
4. a movable box or a fixed low, open structure, as of brick,
in which plants are grown for decorative purposes.
[PJC]