图钉

图钉	tú dīng	thumbtack
图	tú	diagram / picture / drawing / chart / map / CL:张 / to plan / to scheme / to attempt / to pursue / to seek
钉	dīng	nail / to follow closely / to keep at sb (to do sth) / variant of 盯
钉	dìng	to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on