(1):

(v. i.) To take rest and refreshment at noon.

(2):

(a.) Belonging to midday; occurring at midday; meridional.

(3):

(a.) No. See the Note under No.

(4):

(n.) The middle of the day; midday; the time when the sun is in the meridian; twelve o'clock in the daytime.

(5):

(n.) Hence, the highest point; culmination.