Length

n. [A-S. lengðe, equivalent to lengu, lengc, leng, lengéo, from lang, long, long; D. lengte, Dan. & Sw. længde, Ger. länge.] 1. The longest measure of any object, in distinction from depth, thickness, breadth, or width; the extent of any thing from end to end; the longest line which can be drawn through a body, parallel to its sides; as, the length of a church, or of a ship; the length of a rope or line. Stretched at his length, he spurns the swarthy ground. Dryden.

2. A superficial measure; a definite extent; a portion of space considered as measured by its length; — used in the plural. “Large lengths of seas and shores.” Shak.
3. A determined portion of time; long continuance; indefinite duration:

May Heaven, great monarch, still augment your bliss With length of days, and every day like this. Dryden.

4. Detail or amplification; as, to pursue a subject to a great length.
5. Distance. [Obs. and rare.]

He had marched to the length of Exeter. Clarendon. At length. (a.) At or in the full extent; as, let the name be inserted at length. (b.) At last; at the end or conclusion. Syn. — See AT LAST.