a burlesque biography
Hardly a day passed over his head that he did not go idling about the ship with his nose in the air, sneering about the commander, and saying he did not believe Columbus knew where he was going to or had ever been there before.
over his head: What does this mean? Is it a sarcastical sentense?
nose in the air: I can guess it's something arrogant. But I don't know the exact meaning.
The memorable cry of "Land ho!" thrilled every heart in the ship but his. He gazed awhile through a piece of smoked glass at the penciled line lying on the distant water, and then said: "Land be hanged--it's a raft!"
land ho!: What does "ho" mean? Is this English? In sailor's languages, are there words coming from other countries?
smoked: Does this mean the glasses were smoked with fire? Or it's only the color of it?
penciled line: I guess it means the island. But I still don't know what's the penciled line by its original meaning. A very thin pencil mark?
Land be hanged: damn land? Is my understanding right?
raft: a little boat made of leather?