What does "dot" mean?

Dot: A small point or spot, made with a pen or other pointed instrument; a speck, or small mark.

Additional senses

  1. 2.Anything small and like a speck comparatively; a small portion or specimen; as, a dot of a child.
  2. 3.To mark with dots or small spots; as, to dot a line.
  3. 4.To mark or diversify with small detached objects; as, a landscape dotted with cottages.
  4. 5.To make dots or specks.

Sources