One way to hold this word: it is the noun for what a rope does. Tie something up and two things follow. The thing itself cannot move any more, and anything you tied it to now moves with it. American English takes the first road: a tie-up is traffic or a system that has stopped and cannot go on. The other senses take the second: two companies tied together as partners, or two facts tied together so that one goes with the other. When you meet the word, ask whether something is held still, or whether two things are held together.
From the word’s history
Wiktionary records this noun as deverbal from the phrasal verb 'tie up' — the noun is simply the action turned into a thing.
來源資料把這個名詞記為直接從動詞片語 tie up（綁起來）變來的，也就是把動作直接當成一個東西來說。這條線索正好解釋了為什麼它的幾個意思都繞著「綁」在轉。
Wiktionary, "tie-up"
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