needleless From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsadjectiveWithout a needle or needles (especially hypodermic needles). Related wordsSynonymssyringelessknifelessincisionlessdruglesspenlesshooklesscartridgelessstitchlesshemlesspluglesscatheterlesscoillessdevicelesssocketlesspierlesspumpless References Wiktionary — needleless Wikipedia — needleless