Which golfing term means to be ahead by as many holes as there are left to play?

The golfing term you're looking for is "dormie." This situation occurs in match play when a player is ahead by a number of holes equal to the number of holes remaining in the match, meaning their opponent cannot win the match outright. For example, if a player is 3-up with 3 holes to play, they are said to be "dormie."