Nounbottom; sole

Noun, Suru verb, Transitive verb, Intransitive verbthoroughness; completeness; consistency · thorough enforcement; seeing to it that a policy, etc. is carried out without exception

Nounbottom of the ocean; seafloor; seabed · undersea; submarine

Nounroot; basis; foundation

Nounvalley floor; bottom of a gorge; bottom of a ravine