[1] : The Collaborative International Dictionary of English v.0.48

vinegar \vin"egar\, n. oe. vinegre, f. vinaigre; vin wine l.
   vinum + aigre sour. see wine, and eager, a.
   1. a sour liquid used as a condiment, or as a preservative,
      and obtained by the spontaneous acetous fermentation, or
      by the artificial oxidation, of wine, cider, beer, or the
      like.
      1913 webster

   note: the characteristic sourness of vinegar is due to acetic
         acid, of which it contains from three to five per cent.
         wine vinegar contains also tartaric acid, citric acid,
         etc.
         1913 webster

   2. hence, anything sour; -- used also metaphorically.
      1913 webster

            here's the challenge: . . . i warrant there's
            vinegar and pepper in't.              --shak.
      1913 webster

   aromatic vinegar, strong acetic acid highly flavored with
      aromatic substances.

   mother of vinegar. see 4th mother.

   radical vinegar, acetic acid.

   thieves' vinegar. see under thief.

   vinegar eel zool., a minute nematode worm leptodera
      oxophila, or anguillula acetiglutinis, commonly found
      in great numbers in vinegar, sour paste, and other
      fermenting vegetable substances; -- called also vinegar
      worm.

   vinegar lamp chem., a fanciful name of an apparatus
      designed to oxidize alcohol to acetic acid by means of
      platinum.

   vinegar plant. see 4th mother.

   vinegar tree bot., the stag-horn sumac rhus typhina,
      whose acid berries have been used to intensify the
      sourness of vinegar.

   wood vinegar. see under wood.
      1913 webster
see also:
wine eager aromatic vinegar mother of vinegar mother radical vinegar 
thieves' vinegar thief vinegar eel leptodera oxophila anguillula acetiglutinis 
vinegar worm vinegar lamp vinegar plant vinegar tree rhus typhina 
wood vinegar wood 

Vinegar >> V Words
Vinegar, definition of term: Vinegar
vinegar_pag1.html

Lamp >> L Words
Lamp, definition of term: Lamp
lamp_pag1.html

Tail Lamp >> T Words
Tail Lamp, definition of term: Tail Lamp
tail+lamp_pag1.html

Spirit Lamp >> S Words
Spirit Lamp, definition of term: Spirit Lamp
spirit+lamp_pag1.html

Aladdins Lamp >> A Words
Aladdins Lamp, definition of term: Aladdins Lamp
aladdins+lamp_pag1.html

Street Lamp >> S Words
Street Lamp, definition of term: Street Lamp
street+lamp_pag1.html