From WordNet (r) 3.0 (2006) [wn]:
evacuate
v 1: move out of an unsafe location into safety; "After the
earthquake, residents were evacuated"
2: empty completely; "evacuate the bottle"
3: move people from their homes or country
4: create a vacuum in (a bulb, flask, reaction vessel)
5: excrete or discharge from the body [syn: evacuate, void,
empty]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Evacuate \E*vac"u*ate\, v. t. [imp. & p. p. Evacuated; p. pr.
& vb. n. Evacuating.] [l. evacuatus, p. p. of evacuare to
empty, nullify; e out + vacuus empty, vacare to be empty. See
Vacate.]
1. To make empty; to empty out; to remove the contents of;
as, to evacuate a vessel or dish.
[1913 Webster]
2. Fig.: To make empty; to deprive. [R.]
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Evacuate the Scriptures of their most important
meaning. --Coleridge.
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3. To remove; to eject; to void; to discharge, as the
contents of a vessel, or of the bowels.
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4. To withdraw from; to quit; to retire from; as, soldiers
from a country, city, or fortress.
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The Norwegians were forced to evacuate the country.
--Burke.
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5. To make void; to nullify; to vacate; as, to evacuate a
contract or marriage. [Obs.] --Bacon.
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From The Collaborative International Dictionary of English v.0.48 [gcide]:
Evacuate \E*vac"u*ate\, v. i.
1. To let blood [Obs.] --Burton.
[1913 Webster]
2. to expel stool from the bowels; to defecate.
[PJC]