One of the mysteries of the English language finally explained.
The wood of the tree Guaiacum officinale, formerly used medicinally, especially for the treatment of syphilis. Also (more fully "pockwood tree"): the tree itself.
Late 16th century. From pock + wood, so called on account of the plant's medicinal use against syphilis.
In this article we explore how to impress employers with a spot-on CV.