1. Plural of dit; short signals in Morse code, represented by dots.
Usage: telecommunications; often used in contrast with 'dahs' (long signals)
2. Plural of dit; small amounts or particles; specks or bits.
Usage: informal; chiefly British

Examples

• In Morse code, the letter 'E' is represented by a single dit.
• The operator sent a series of dits and dahs across the radio.
• There were dits of dust scattered across the old furniture.
• The telegraph machine clicked out dits in rapid succession.
• She cleaned the dits of dirt from the window sill.