Brown-Driver-Briggs (BDB)
H1613
H1613 גֹּ֫פֶר gopher , wood of which the ark was made
Brown-Driver-Briggs Hebrew Lexicon (BDB), 1906 — public domain
Strong's H1613 · Hebrew
gopher
go'-fer
from an unused root, probably meaning to house in; a kind of tree or wood (as used for building), apparently the cypress