a woman who engages in sexual intercourse for money; whore; harlot.
2.
a man who engages in sexual acts for money.
3.
a person who willingly uses his or her talent or ability in a base and unworthy way, usually for money.
–verb (used with object)
4.
to sell or offer (oneself) as a prostitute.
5.
to put to any base or unworthy use: to prostitute one's talents.
Origin: 1520–30; < L prōstitūta, n. use of fem. of prōstitūtus, ptp. of prōstituere to expose (for sale), equiv. to prō-pro-1+ -stitū-, comb. form of var. s. of statuere to cause to stand + -tus ptp. suffix; see status
To sell (oneself or one's talent, for example) for an unworthy purpose.
[Latin prōstitūta, from feminine past participle of prōstituere, to prostitute : prō-, in front; see pro-1 + statuere, to cause to stand; see stā- in Indo-European roots.] pros'ti·tu'tor n.
Main Entry: prostitute Function: transitive verb Inflected Forms: -tut·ed; -tut·ing Etymology: Latin prostitutus, past participle of prostituere, from pro- before + statuere to cause to stand, place : to offer as a prostitute
[pros-ti-toot, -tyoot] 
noun, verb, -tut⋅ed, -tut⋅ing.