I. shin 1 /ʃɪn/ BrE AmE noun [countable]
[ Language: Old English ; Origin: scinu ]
the front part of your leg between your knee and your foot
II. shin 2 BrE AmE verb ( past tense and past participle shinned , present participle shinning ) [intransitive] British English
shin up/down to climb quickly up or down a tree, pole etc by using your hands and legs SYN shinny American English :
He shinned up a tree.