a·peak 
(ə-pēk)
(ə-pēk)adv. & adj.
Nautical
Nautical
In a vertical or almost vertical position or direction: rowers holding their oars apeak.
[Alteration of apike, probably from French à pic : à, to (from Old French a, from Latin ad-; see AD-) + pic, peak (from Old French).]