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Webster 1913 Edition

Noun.

The soft and easily-worked wood of the tulip tree (

Liriodendron tulipifera

). It is much used in cabinetwork, carriage building, etc.

☞ Several other kinds of light-colored wood are called whitewood in various countries, as the wood of

Bignonia leucoxylon

in the West Indies, of

Pittosporum bicolor

in Tasmania, etc.

Whitewood bark

See the Note under

Noun.

A species of timber tree growing in North America, the Liriodendron, or tulip tree. The name of certain species of Bignonia.

whitewood ‎(plural whitewoods)

Any of several deciduous trees that are used for furniture, especially the tulip tree.
The wood of these trees.
(pinball) A prototype version of a pinball table, without the final artwork.
- 2001, Jacqueline L. Longe, How Products are Made
  When the design seems satisfactory, the whitewood is wired to make it playable. Meanwhile the software developer has been creating the unique software to control the game.