Definition - physically beautiful
If the meaning of this word seems counterintuitive, it's probably because the word's Latin ancestor pulcher ("beautiful") is unfamiliar, and pulchritudinous sounds more disgusting than enchanting. We have been using pulchritude to refer to beauty since the 15th century. Pulchritudinous is a more recent addition to our language; its use dates to the early 18th century, and only began to be used to specifically refer to people’s beauty in the middle of the 19th.
The braided locks of the pulchritudinous fair ones, with their infinity of triple plaits, are lent to the mercies of the wind.
— The Athenæum (London, Eng.), 25 Sept. 1858