What does the hook mean?

Hook? [ancient]

1. Use a stroke to indicate deletion or interception: ~ pin. ~ b (draw a mark similar to "b" at both ends of some words in newspapers and books to indicate information).

2. Draw the outline of the image, draw: ~ draw. ~ music.

3. Paint the joints of buildings with ash, cement, etc.

4. Stir into a sticky shape and season: ~.

5. traction, attraction: ~ attraction. ~ yes.

6. stay, stay: ~ stay.

7. Intake: ~ thrilling (described as mind-shaking and uncontrollable).

8. In ancient Chinese mathematical works, the shorter right-angled side of isosceles right-angled triangle is called ~ sharing theorem.