Shin
Old English scinu, probably from a Germanic base meaning ‘narrow or thin piece’; related to German Schiene ‘thin plate’ and Dutch scheen . The verb was originally in nautical use (early 19th century).
wiktionary
From Middle English shyn, shine, from Old English scinu, from Proto-Germanic *skinō. Cognate with West Frisian skine, Dutch scheen, German Schiene.
shin (plural shins)
etymonline
shin (n.)
Old English scinu "shin, fore part of the lower leg," from Proto-Germanic *skino "thin piece" (source also of Dutch scheen, Old High German scina, German Schienbein "shin, shinbones"), from PIE root *skei- "to cut, split." Shin splints is attested from 1930.
shin (v.)
"to climb by using arms and legs" (originally a nautical word), 1829, from shin (n.). Related: Shinned; shinning.