checkpoint

[chek-point]
noun
  1. a place along a road, border, etc., where travelers are stopped for inspection.
  2. a point or item, especially in a procedure, for notation, inspection, or confirmation.

Origin of checkpoint

First recorded in 1935–40; check1 + point
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for checkpoint

checkpoint

noun
  1. a place, as at a frontier or in a motor rally, where vehicles or travellers are stopped for official identification, inspection, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for checkpoint
n.

1940, from check (v.) + point (n.). Originally an aviator's term for landforms or structures of known height against which the craft's altitude could be visually checked. The "vehicle stop" sense is recorded from 1950.

Online Etymology Dictionary, © 2010 Douglas Harper