Wordnet 3.0
VERB (2)
1.
remove from political office;
- Example: "The Republicans are trying to unseat the liberal Democrat"2.
dislodge from one's seat, as from a horse;
The Collaborative International Dictionary of English v.0.48:
Unseat \Un*seat"\, v. t. [1st pref. un- + seat.]
[1913 Webster]
1. To throw from one's seat; to deprive of a seat. --Cowper.
[1913 Webster]
2. Specifically, to deprive of the right to sit in a
legislative body, as for fraud in election. --Macaulay.
[1913 Webster]
[1913 Webster]
WordNet (r) 3.0 (2006):
unseat
v 1: remove from political office; "The Republicans are trying
to unseat the liberal Democrat"
2: dislodge from one's seat, as from a horse