tie-up(n.)
1715, "something that is tied up" (originally a type of wig); 1889 in reference to a street-car drivers' strike tactic of stopping in traffic and tying up their horses to block it; see tie (v.) + up (adv.). The verbal phrase is by mid-14c. as "confine, restrain, hamper," 1520s as "to bind, bundle."
该词起源时间:1715年