This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. A woman who serves at a table, as in a restaurant. See Usage Note at -ess.

n. A female attendant who serves customers in a restaurant, café, or similar.

v. To work as a waitress.

n. A female waiter or attendant; a waiting maid or waiting woman.

n. A woman who waits at table: originally used only of one who served in a place of public entertainment.

n. a woman waiter

v. serve as a waiter or waitress in a restaurant

"* stood waiting for a seat for 5 minutes, I had to approach someone and ask to be seated* sat waiting 20 minutes for a waitress, I had to request a waitress* after ordering drinks was told"

waitressing   

work   

wait    waiter   

waiter    bartender    chambermaid    housekeeper    chef    redhead    maid    nurse    butler    chauffeur