shim ‧ my /ˈʃɪmi/ BrE AmE verb ( past tense and past participle shimmied , present participle shimmying , third person singular shimmies ) [intransitive]
[ Date: 1900-2000 ; Origin: shimmy type of dance (1900-2000) , perhaps from shimmy 'simple dress or piece of women's underwear' (19-20 centuries) , from chemise ]
to move forwards or backwards while also quickly moving slightly from side to side