penstock /penˈstok/

1. A sluice
2. (in a hydroelectric or other plant) a valve-controlled water conduit

• posterizations
• posterize
• posterized
• posterizes
• posterizing
• postern
• posterns
• poster paints
• posters
• poster session
• poster sessions
• post exchange
• post-exilian
• post-exilic
• post-existence
• postface
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• postfeminism
• postfeminisms
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• postfix
• postfixed
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• postfixing