Meaning of MANIFOLD in English

I. man ‧ i ‧ fold 1 /ˈmænəfəʊld, ˈmænɪfəʊld $ -foʊld/ BrE AmE adjective formal

[ Language: Old English ; Origin: manigfeald ]

many and of different kinds:

The reasons for this situation are manifold.

II. manifold 2 BrE AmE noun [countable] technical

an arrangement of pipes through which gases enter or leave a car engine

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.