Words related to over
"loose trousers of a strong material worn by cowboys, etc.," 1782, from over (adv.) + all. Specific sense "loose fitting canvas trousers with a bib and strap top" (originally worn by workmen over other clothes to protect them from wet, dirt, etc.) is attested by 1897. Compare French surtout "overcoat," literally "an over all," from sur- "over" + tout "all."
"over the side of a ship," late Old English, from the phrase ofor bord, from over + bord "side of a ship" (see board (n.2)). To throw (something) overboard in the figurative sense of "cast aside, discard, reject" is from 1640s. Figurative sense of "excessively, beyond one's means" (especially in phrase go overboard) is attested by 1931 in Damon Runyon.