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Elbow
eyes
neck
nail
The eye, the skin
Arm
Teeth are the part of a body that is also the edge of a saw.
The mouth, where the river ends.
No; "macaroni" is probably derived from a Latin root (we get "macerate" from the same root), it isn't someone's name. Macaroni (the pasta) is probably an Arabic invention.
veins
Tuna
PALLET