prest money

noun British Obsolete.
  1. a sum of money advanced to men enlisting in the navy or the army, given to bind the bargain and as an inducement.

Origin of prest money

late Middle English word dating back to 1400–50
Also called press money, prest.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018