The English verb serve can be used in two different ways: you can serve food, and you can serve a person. The author of The Klingon Dictionary, Marc Okrand, obviously was a aware of this and added clarifications for those words in his dictionary on page 152:

serve (a master) toy'
serve (food) jab

Derived nouns from this include the same meaning: jabwI' = "waiter, waitress" and toy'wI' "servant".

Examples of usage

These two examples from Conversational Klingon show that the object of jab is the thing (food, drink) being served. The recipient of the served food is marked with type 5 noun suffix -Daq:

HIq qIj reghuluS 'Iw HIq ghap jab.
They serve black ale, or Regulan bloodwine.

tera'nganvaD romuluS HIq jabQo'. HoSghajqu'.
They won't serve Romulan ale to Terrans, too potent.

Computer server

Maybe you were searching for the "server" in a sense of computer terms. The noun for that is turwI'. This is based on the verb tur "perform duties" so it does not include the English meaning of "serve".

See also

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