Source : Webster's Revised Unabridged Dictionary (1913)

Choky \Cho"ky\, n. [From Hind. chauki watching, guard.]
   1. A station, as for collection of customs, for palanquin
      bearers, police, etc. [India]

   2. Specif., a prison or lockup; a jail. [India, or Slang,
      Eng.]

Source : WordNet®

choky
     adj : so tight as to tend to choke; "a choky collar"
     n : British slang (dated) for a prison [syn: {chokey}]