oat·er 
(ōtər)
(ōtər)n.
Slang
Slang
A movie about frontier or cowboy life; a western.
[From the prominence of horses, known for their taste for oats, in such films.]
- postoperative
- postoperatively
- postorbital
- postpaid
- postpartum
- post-polio syndrome
- postponable
- postpone
- postponement
- postpose
- postposition
- postpositional
- postpositionally
- postpositive
- postpositively
- postprandial
- postprandially
- postproduction
- postscript
- PostScript
- postseason
- poststructuralism
- postsynaptic
- postsynaptically
- posttest