The Collaborative International Dictionary of English v.0.48:

Until \Un*til"\, conj.
   As far as; to the place or degree that; especially, up to the
   time that; till. See Till, conj.
   [1913 Webster]

         In open prospect nothing bounds our eye,
         Until the earth seems joined unto the sky. --Dryden.
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         But the rest of the dead lives not again until the
         thousand years were finished.            --Rev. xx. 5.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Until \Un*til"\, prep. [OE. until, ontil; un- (as in unto) + til
   till; cf. Dan. indtil, Sw. intill. See Unto, and Till,
   prep.]
   [1913 Webster]
   1. To; unto; towards; -- used of material objects. --Chaucer.
      [1913 Webster]

            Taverners until them told the same.   --Piers
                                                  Plowman.
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            He roused himself full blithe, and hastened them
            until.                                --Spenser.
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   2. To; up to; till; before; -- used of time; as, he staid
      until evening; he will not come back until the end of the
      month.
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            He and his sons were priests to the tribe of Dan
            until the day of the captivity.       --Judg. xviii.
                                                  30.
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   Note: In contracts and like documents until is construed as
         exclusive of the date mentioned unless it was the
         manifest intent of the parties to include it.
         [1913 Webster]

The Free On-line Dictionary of Computing (30 December 2018):

while loop
until
while

    The loop construct, found in nearly all
   procedural languages, that executes one or more instructions
   (the "loop body") repeatedly so long as some condition
   evaluates to true.  In contrast to a repeat loop, the loop
   body will not be executed at all if the condition is false on
   entry to the while.

   For example, in C, a while loop is written

   	while () ;

   where  is any expression and  is any
   statement, including a compound statement within braces
   "..".

   A for loop, e.g. in the C language, extends the while loop
   syntax to collect pre-loop initialisation and loop-end logic
   into the beginning of the statement.

   Perl provides the "until" loop that loops until the loop
   condition is true.

   (2009-10-07)