What is the meaning of Redwood?

A tree of the species Sequoia sempervirens.

Any of the evergreen conifers belonging to the genus Sequoia in the wide sense.

Wood of the species Sequoia sempervirens.

Wood of the species Pinus sylvestris.

A tree of species Manilkara bidentata harvested for timber and latex.

Timber from the Manilkara bidentata tree.

Source: wiktionary.org