slush pump

slush pump

[′sləsh ‚pəmp]
(petroleum engineering)
A pump used to circulate the drilling fluid during rotary drilling.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Their campaigns have become little more than vast slush pumps sucking in money from wealthy individuals and interest groups with promises of perks and favorable treatment, poisoning our democracy and spreading cynicism, yet genuine campaign finance reform is nowhere in sight, and the candidates have stopped discussing it.