Hull's foundation (4)
I believe the answer is:
keel
(Other definitions for keel that I've seen before include "Low part of ship" , "Cool, or it used to be" , "Beam on the hull of a vessel" , "Vessel stabiliser" , "Earth (Latin)" .)
I believe the answer is:
keel
(Other definitions for keel that I've seen before include "Low part of ship" , "Cool, or it used to be" , "Beam on the hull of a vessel" , "Vessel stabiliser" , "Earth (Latin)" .)