1. empty spaces or openings between two things
2. missing parts or periods of time
3. differences or disparities between groups or things

Examples

• There are gaps between the fence boards.
• She has gaps in her memory from the accident.
• The income gaps between rich and poor are widening.
• Fill in the gaps in this worksheet.
• Mind the gaps when boarding the train.
• There were long gaps between his visits.
• The report identified gaps in our security system.