- The fourth of the seven canonical hours.
- The time of day set aside for this service, usually the sixth hour, or noon.
- In the Roman Catholic and Greek churches, in religious houses, and as a devotional office in the Anglican Church, the office of the sixth hour, originally and properly said at midday. See <internalXref urlencoded="canonical%20hours">canonical hours</internalXref>, under <em>canonical.</em>
- In <em>music</em>:
- The interval of a sixth.
- In organ-building, a mixture-stop of two ranks separated by a sixth—that is, consisting of a twelfth and a seventeenth.
- The office for the sixth canonical hour, being a part of the Breviary.
- The sixth book of the decretals, added by Pope Boniface VIII.
- A <xref>sexual</xref> <xref>text message</xref>.
- Any electronic message with sexual context.
- To send a sext message.
- To send (someone) a (sext message).
- The <xref>fourth</xref> of the <xref>canonical hours</xref>; usually held at <xref>noon</xref>.
- the fourth of the seven canonical hours; about noon