nev'ob refers to both the "thigh" and the "upper arm" (above the elbow). Similarly, reStav refers to both the "shin" and the "forearm." If it's necessary to make a distinction, precede these words with 'uS or DeS.

cha'neH, when used alone, means "forearm." But when preceded by 'uS, it means "lower part of the leg." You could also say DeS cha'neH for "forearm," but this would probably be used only in a context where you were talking about both the forearm and the lower leg and wanted to clarify which was which.

reStav is "shin," meaning the front of the lower leg. (I assume [the German word] "Schienbein" is "shin bone." reStav is more than just the bone. The only way Maltz was aware of for referring to the bone is reStav Hom.)

Do'ghI' is "calf," meaning the back of the lower leg ([the German word] "Wade," presumably).

(Marc Okrand to Lieven L. Litaer talking about Hamletmachine, November 2019)

The general term for ax is 'obmaQ. Its handle is its DeS and its blade is its ghIt. These words, DeS and ghIt, when referring to humanoid anatomy, mean "arm" and "open, flat hand" (as opposed to a fist), respectively, suggesting that at one time the ax was considered an extension of the warrior himself. (KGT S. 63)

The smaller nevDagh is characterized by its V-shaped handles, termed DeSqIvDu' ("elbows"; note that -Du', the plural suffix for body parts, is used here even though the handles are not literally body parts). (KGT S. 97)