We'd better get back to the garden. The thymus has a quaint name that both green thumbs and chefs would recognize. It is taken directly from the Latin word for the herb we call thyme. The mediastinal gland is said to resemble the leaves of that member of the mint family. In this way it may be related to the thio-combining form we use in organic chemistry.
Nothing evokes a sense of smoke and burning like brimstone.
The pisiform, the smallest carpal bone fits this description nicely. The fleshy bit of tissue seen hanging from the back of the palate could be said to resemble a berry, hanging from a stalk. Klein's Comprehensive Etymological Dictionary of the English Language says the structure was named by J. Vesling, an anatomist who lived from 1598 to 1649. Strictly speaking, this appendage should be called by its full name of uvula palatina, since there are other grape-like structures which claim the name too. Any projection with a similar shape can be referred to as a spine, and there are many of them.