manifold
US /ˈmæn.ə.foʊld/
UK /ˈmæn.ə.foʊld/

1.
many and various
:
•
The reasons for the decline are manifold.
•
He faced manifold challenges in his new role.
1.
a pipe or chamber branching into several openings
:
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The exhaust manifold collects gases from the engine cylinders.
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An intake manifold distributes the air-fuel mixture to each cylinder.