parasite

IPA: pˈɛrʌsaɪt

(derogatory) A person who lives on other people's efforts or expense and gives little or nothing back.
(derogatory) A sycophant or hanger-on.
(biology) An organism that lives on or in another organism of a different species, deriving benefit from living on or in that other organism, while not contributing towards that other organism sufficiently to cover the cost to that other organism.
(literary, poetic) A climbing plant which is supported by a wall, trellis etc.
(historical) A retainer or companion of an ancient Celtic warrior, who praised him in song or poetry at gatherings; a bard.
(aviation) A component of a composite aircraft which is carried aloft and air-launched by a larger carrier aircraft or mother ship to support the primary mission of the carrier; a parasite aircraft.

Examples of "parasite" in Sentences