n.

1. the process whereby a person concentrates on some features of the environment to the (relative) exclusion of others;
   attending
2. the work of providing treatment for or attending to someone or something;
   care, aid, tending
   
   • no medical care was required
   • the old car needs constant attention
3. a general interest that leads people to want to know more
   
   • She was the center of attention
4. a courteous act indicating affection
   
   • she tried to win his heart with her many attentions
5. the faculty or power of mental concentration
   
   • keeping track of all the details requires your complete attention
6. a motionless erect stance with arms at the sides and feet together; assumed by military personnel during drill or review
   
   • the troops stood at attention