n. 
1.  A tapering, projecting point; a pointed extremity: the peak of a cap; the peak of a roof. 
2.  Abbr.  Pk. 
a.  The pointed summit of a mountain.
b.  The mountain itself.
 
3. 
a.  The point of a beard.
b.  A widow's peak.
 
4.  The point of greatest development, value, or intensity: 
a novel written at the peak of the writer's career.  See Synonyms at 
summit .
 
5.  Physics  The highest value attained by a varying quantity: a peak in current. 
6.  Nautical 
a.  The narrow portion of a ship's hull at the bow or stern.
b.  The upper after corner of a fore-and-aft sail.
c.  The outermost end of a gaff.
 
 
v.  peaked , peak·ing , peaks 
v. tr. 
1.  Nautical  To raise (a gaff) above the horizontal.
2.  To bring to a maximum of development, value, or intensity.
 
v. intr. 
1.  To be formed into a peak or peaks: Beat the egg whites until they peak. 
2.  To achieve a maximum of development, value, or intensity: Sales tend to peak just before the holidays. 
 
adj. 
Approaching or constituting the maximum: working at peak efficiency. 
 
[Probably Middle English pike, peke ; see pike 5 .]
VIDEO 
After this. Only Yogg-Saron to go. (and algalon.) (which we did on 10man).
Of the horde on a level 19......