no·tice 
(nōtĭs)
(nōtĭs)n.
1. The act of noting or observing; perception or attention: That detail escaped my notice.
2. Respectful attention or consideration: grateful for the teacher's notice.
3. A written or printed announcement: a notice of sale.
4.
a. A formal announcement, notification, or warning, especially an announcement of one's intention to withdraw from an agreement or leave a job: gave my employer two weeks' notice; raised the price without notice.
b. The condition of being formally warned or notified: put us on notice for chronic lateness.
5. A printed critical review, as of a play or book.
tr.v. no·ticed, no·tic·ing, no·tic·es
1. To take notice of; observe: noticed a figure in the doorway. See Synonyms at see1.
2. To perceive with the mind; detect: noticed several discrepancies.
3. Archaic
a. To comment on; mention.
b. To treat with courteous attention.
[Middle English, knowledge, from Old French, from Latin nōtitia, from nōtus, known, past participle of nōscere, to get to know; see gnō- in the Appendix of Indo-European roots.]
notic·er n.