obscured their passage (ob-skurd'; pas'aj), hid their line of movement
observation (ob'zer-vay'shun), careful notice
obstacle (ob'sta-k'l), something in the way
obtained a foothold (ob-tand'), got a start
occupied with her grief (ok'u-pi-d), full of sorrow
o'cean's breast (o'shanz brest), calm surface of the sea
O drug, useless thing
o'er-shadowed Thanksgiving Day (or-shad'od), brought up sad thoughts on the holiday
o'er the combers (or; kom'erz), over the long rolling waves
of all degrees, of all kinds, large and small