to join things together by fixing them in place at one or more points / to nail / to pin / to staple / to sew on
钉
=
丁
+
钅
:
Dorothy Gale (di) uses the nail (钉) she found earlier to nail (钉) her pizza (丁) to the wall of the engine's bathroom ((e)ng4) to serve as warning for other visitors. As a hammer she uses a golden harpoon (钅).