What is the meaning of Tardy?

Late; overdue or delayed.

Moving with a slow pace or motion; not swift.

Ineffectual; slow-witted, slow to act, or dull.

Unwary; unready (especially in the phrase take (someone) tardy).

Criminal; guilty.

A piece of paper given to students who are late to class.

An instance of a student's being marked as tardy by a teacher on the teacher's attendance sheet.

To make tardy.

Source: wiktionary.org