When you leave someone "in the lurch," you leave them in a jam, in a difficult position. But while getting left in the lurch may leave you staggering around and feeling off-balance, the "lurch" in this expression has a different origin than the staggery one. The balance-related lurch comes from nautical vocabulary, while the lurch you get left in comes from an old French backgammon-style game called lourche. Lurch became a general term for the situation of beating your opponent by a huge score. By extension it came to stand for the state of getting the better of someone or cheating them.
Source: 12 old words that survived by getting fossilized in idioms, from Mental Floss