gigolo (n.)youdaoicibaDictYouDict
"professional male escort or dancing partner, young man supported financially by an older woman in exchange for his attentions," 1922, from French gigolo, formed as a masc. of gigole "tall, thin woman; dancing girl; prostitute," perhaps from verb gigoter "to move the shanks, hop," from gigue "shank" (12c.), also "fiddle," Old French giga from Frankish *giga- or some other Germanic word (compare German Geige "fiddle"). This is perhaps the same word that was borrowed earlier as Middle English giglot (early 14c.) "lewd, wanton girl," which was later applied to males (mid-15c.) with the sense "villainous man." It is perhaps related to a number of words in Germanic meaning "dance, gambol," and "fiddle," perhaps connected by the notion of "rapid, whirling motion" (see gig (n.1)). Middle English gigletry meant "lasciviousness, harlotry" (late 14c.).
Naturally, no decent French girl would have been allowed for a single moment to dance with a gigolo. But America, touring Europe like mad after years of enforced absence, outnumbered all other nations atravel ten to one. [Edna Ferber, "Gigolo," 1922]
masher (n.)youdaoicibaDictYouDict
"thing that mashes," c. 1500, agent noun from mash (v.). Meaning "would-be lady-killer" is from 1875, American English, perhaps in use from 1860, probably from mash (v.) on notion either of "pressing one's attentions," or of "crushing someone else's emotions" (compare crush).
He was, to use a Western expression, a 'regular heart-smasher among the women; and it may not be improper to state, just here, that no one had a more exalted opinion of his capabilities in that line than the aforesaid 'Jo' himself. ["Harper's New Monthly Magazine," March 1861]


He had a weakness to be considered a regular masher of female hearts and a very wicked young man with the fair sex generally, but there was not a well-authenticated instance of his ever having broken a heart in his life, nor likely to be one. [Gilbert A. Pierce, "Zachariah, The Congressman," Chicago, 1880]
Also in use late 19c were mash (n.) "a romantic fixation, crush" (1884); mash (v.) "excite sentimental admiration" (1882); mash-note "love letter" (1890).