This is the 3087th most frequent Chinese word.
钉
Nail; peg; to fix or fasten.
The verb '钉' here means 'to nail' or 'to affix using nails'.
工人正在将木板钉在墙上。
The worker is nailing the wooden board onto the wall.
The noun '钉' in this sentence refers to 'nails' used in construction or joining materials.
这些钉都已经生锈了。
These nails have all become rusty.
The verb '钉' metaphorically means 'to fix one's gaze upon something' in this context.