careen
vt.
5Fr carener, careen < OFr car\ne, carine < OIt carena < L carina, keel of a ship, orig., nutshell: see HARD6
1 to cause (a ship) to lean or lie on one side, as on a beach, for cleaning, repairs, etc.
2 to caulk, clean, or repair (a ship in this position)
3 to cause to lean sideways; tip; tilt
vi.
1 to lean sideways, as a sailing ship before a high wind
2 to lurch from side to side, esp. while moving rapidly
n.
the act or position of careening

Notice that "carina" is breastbone (mostly cartilage) of a bird. I'll bet that this preceded
the making of keels for boats.