Three/θriː/ Definition 1 of 4Pro Tip 1/3Counting Objects Use 'three' to count items. It helps specify exact quantity. She bought three tickets. Pro Tip 2/3Time Frequency In time expressions, 'three' sets how often something happens. We clean the house three times a week. Pro Tip 3/3Measure Duration Use 'three' for periods of time, expressing duration or deadlines. I finished the project in three days.