Green’s Dictionary of Slang

tron n.

[abbr. SE waitron, preferred non-sexist term]

(US) a waitress or waiter; also as v.

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A. Owings Hey, Waitress! 269: ‘’Tron,’ from the non-sexist yet mocking term ‘waitron,’ means waitress. [Ibid.] 270: I started out cleaning the restaurant, not ’tronning.’.