English backbone

← Old English hryċġbān (cognate)

← English back (compound)

← English bone (compound)

← Middle English bakbon (inherited)

← Middle English bakebon (mention)

← Middle English bac-bon (mention)

← West Frisian rêchbonke (cognate)

→ English skeleton (link)

→ English backboned (suffix)

→ English backboneless (suffix)

→ Old Norse hryggr (link)