Since this is in the Health topic I will answer on what I think your question is... Antecubital means before or in front of the elbow. The little depression in the bend or "crook" of your elbow is called the antecubital fossa.
Time before noon.
History.
Before the use of standard time, (Greenwich Mean Time, time zones, etc.) most communities used solar time. Every town had its own standard of time. Noon was when the sun...