in lieu (of sth) › HR instead of something: You can take a lump sum in lieu of any unused vacation entitlement. He was offered a cash bonus, or stock options in lieu. › US LAW until an amount of money is paid to prove that a person charged with a crime will not try to leave the country: in lieu of bail/bond He is being held in the City Jail in lieu of $500,000 bond.
→ See also time off in lieu