Rope
Cord
noun
The kanji is rope, so this word also refers to a rope.
綱 refers to thick or sturdy ropes, like the kind used on ships or for pulling something heavy. You'll also see it in phrases for things people "cling to" for support or survival, like 命綱 (a lifeline, either literal or figurative) and 頼みの綱 (someone or something to count on when all else fails).
The reading used here is the reading you learned with the kanji.
綱を引く
to pull a rope
綱を持つ
to hold a rope
綱を引っ張る
to tug on a rope
頼みの綱
something you can depend on, someone you can count on in difficult times
綱渡り
tightrope walking
綱引き
tug-of-war
綱がゆるむ
a rope slackens
綱が切れる
a rope snaps
綱がある
there's a rope
命綱
a safety tether, a lifeline
ロッククライミング中に落ちないように綱で体を固定しました。
I used a rope to hold myself in place so I wouldn't fall while rock climbing.
さすが６年生。綱を引く力が強いですね。
That's the sixth graders for you — they're really strong at pulling the rope.
二つの気球の間を綱渡りした男の人の話はもうお聞きになりましたか？
Have you heard about the man who walked a tightrope between two hot air balloons?