She said, “Go to Learners Dictionary dot com [=the Web site www.learnersdictionary.com] for more information.”
She arrived at 3 o'clock 'on the dot'. = She arrived 'on the dot of' 3. [=she arrived exactly at 3 o'clock]
We need some extra time to 'dot the i's and cross the t's' on the report.
(..) Bring the suspect to the crime scene and hope he incriminates himself. Suspect? Check your jacket pocket. Just look. GPS tracking dot. Accurate within two feet anywhere on the globe. The agent who picked you up slipped it into your jacket... ...in case you tried to run. (..)2006 The Da Vinci Code