Vesicle

n. bladder or bladder-like cavity; small blister filled with fluid; sac in the body, cyst (especially one filled with fluid); cavity formed in a rock by a pocket of gas that is trapped during the rock's formation (Geology)

Vesicle may refer toVesicle (biology), a relatively small and enclosed compartment within a cellVesicular texture, a small enclosed cavity found in some volcanic rock, such as basaltVesicle (adhesive tape), a blister of glue on adhesive tape that is burst when pressure is applied Vesicle (lipidomics), a unilamellar phospholipid liposome studied by biophysical chemists for understanding biomembranes and developing new vehicles for drug delivery
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Vesicle /ves·i·cle/ 1. a small bladder or sac containing liquid. 2. a small circumscribed elevation of the epidermis containing a serous fluid; a [more]Vesicle - Community and Resources

Noun
1. a small anatomically normal sac or bladderlike structure (especially one containing fluid)
(synonym) cyst
(hypernym) sac
(hyponym) lacrimal sac, tear sac, dacryocyst

(n.)
A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid.
  

(n.)
A small convex hollow prominence on the surface of a shell or a coral.
  

(n.)
A small cavity, nearly spherical in form, and usually of the size of a pea or smaller, such as are common in some volcanic rocks. They are produced by the liberation of watery vapor in the molten mass.
  

(n.)
A small bladderlike body in the substance of vegetable, or upon the surface of a leaf.
  

(n.)
A cavity or sac, especially one filled with fluid; as, the umbilical vesicle.
  

(n.)
A bladderlike vessel; a membranous cavity; a cyst; a cell.