What does "absent" mean?

Additional senses

1. 2.Inattentive to what is passing; absent-minded; preoccupied; as, an absent air. What is commonly called an absent man is commonly either a very weak or a very affected man. Chesterfield. These words both imply a want of attention to surrounding objects. We speak of a man as absent when his thoughts wander unconsciously from present scenes or topics of discourse; we speak of him as abstracted when his mind (usually for a brief period) is drawn off from present things by some weighty matter for reflection. Absence of mind is usually the result of loose habits of thought; abstraction commonly arises either from engrossing interests and cares, or from unfortunate habits of association.
2. 3.To take or withdraw (one's self) to such a distance as to prevent intercourse; -- used with the reflexive pronoun. If after due summons any member absents himself, he is to be fined. Addison.
3. 4.To withhold from being present. [Obs.] "Go; for thy stay, not free, absents thee more." Milton.