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What does suck up mean?

Looking for the meaning or definition of the word suck up? Here's what it means.

Verb
  1. (transitive) To absorb (fluid).
  2. (slang, chiefly with "to") To adulate or flatter somebody excessively, generally to obtain some personal benefit or favour.
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Examples
Tumors suck up so much cholesterol that LDL has been considered a vehicle for delivering antitumor drugs to cancer cells.
Once when he tried to suck up liquid in a pipette while testing metals, he accidentally sucked some of the dangerous liquid into his mouth.
When feeding, they suck up mud from the bottom and then expel it and select their food while it is suspended in the water.
Growing a cover crop would suck up so much precious moisture that it would put him in the red.
Remember the population bomb, the fertility explosion set to devour the world's food and suck up or pollute all its air and water?
Encia workmen are punching boreholes deep into the ground to suck up oily chemicals which leaked into aquifers far beneath the surface.

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