2. siphon a projecting tubular part of some animals, esp. certain mollusks, through which liquid enters or leaves the body.
3. (v.i.)siphon to convey, draw, or pass through or as if through a siphon (sometimes fol. by off).
Etymology: (1650–60; < L sīphōn- (s. of sīphō) < Gk síphōn, s&imacracute;phōn pipe, tube)
Definition of 'siphon'
Princeton's WordNet
1. (noun)siphon, syphon a tube running from the liquid in a vessel to a lower level outside the vessel so that atmospheric pressure forces the liquid through the tube
2. (verb)siphon, syphon a tubular organ in an aquatic animal (especially in mollusks) through which water can be taken in or expelled
3. (verb)siphon, syphon, siphon off convey, draw off, or empty by or as if by a siphon
4. (verb)siphon move a liquid from one container into another by means of a siphon or a siphoning action "siphon gas into the tank"
Definition of 'siphon'
Webster Dictionary
1. (noun)siphon a device, consisting of a pipe or tube bent so as to form two branches or legs of unequal length, by which a liquid can be transferred to a lower level, as from one vessel to another, over an intermediate elevation, by the action of the pressure of the atmosphere in forcing the liquid up the shorter branch of the pipe immersed in it, while the continued excess of weight of the liquid in the longer branch (when once filled) causes a continuous flow. The flow takes place only when the discharging extremity of the pipe ia lower than the higher liquid surface, and when no part of the pipe is higher above the surface than the same liquid will rise by atmospheric pressure; that is, about 33 feet for water, and 30 inches for mercury, near the sea level
4. (noun)siphon the tubular organ through which water is ejected from the gillcavity of a cephaloid. It serves as a locomotive organ, by guiding and confining the jet of water. Called also siphuncle. See Illust. under Loligo, and Dibranchiata
Sense: a bent pipe or tube through which liquid can be drawn off from one container to another at a lower level He used a siphon to get some petrol out of the car's tank.
Definitions of siphon 
Afrikaans: sifon
Arabic: أُنْبو، ��ِحْقَن، سيفون
Bulgarian: сифон
Brazilian: sifão
Czech: násoska
German: der Siphon
Danish: hævert
Greek: σιφόνι
Spanish: sifón
Estonian: sifoon(toru)
Farsi: سيفون
Finnish: lappo
French: siphon
Hebrew: סִיפוֹן
Hindi: साइफन नली
Croatian: zatvoren kanal, cijev
Hungarian: szívócső
Indonesian: sedotan
Icelandic: vökvasuga, sogari
Italian: sifone
Japanese: サイフォン
Korean: 흡입관, 사이펀
Lithuanian: sifonas
Latvian: sifons
Malay: sifon
Dutch: hevel
Norwegian: hevert
Polish: rura przelewowa
Persian: سيفون
Pashto: سيفون، يو نان (نعل) شكله 
Portuguese: sifão
Romanian: sifon
Russian: сифон
Slovak: násoska, sifón
Slovenian: sesalna natega
Serbian: cev za tečnost
Swedish: hävert
Thai: ท่อที่ใช้ทำกาลักน้ำ
Turkish: sifon
Taiwanese: 虹吸管
Ukrainian: сифон
Urdu: ایک نلکی جس کے ذریعہ پیٹر
Vietnamese: ống xi-phông, ống truyền 
Chinese: 虹吸管
