Gopher-wood (נמר)
,of which the ark was made.
It was acacia, says the Religious Tract Society.
It was boxwood, says the Arabian commentators.
It was bulrushes, daubed over with slime, says Dawson.
It was cedar, says the Targum of Onkelos.
It was cypress, says Fuller, and κνπαρ is not unlike gopher.
It was ebony-wood, says Bockart.
It was deal or fir-wood, say some.
It was juniper-wood, says Castellus.
It was pine, say Asenarius, Munster, Persie, Taylor, etc.
It was wicker-wood, says Geddes.