tire

Multiple Entries:
  tire    tyre  

Concise Oxford English Dictionary © 2008 Oxford University Press:
tire1

▶verb

• 1 become or cause to become in need of rest or sleep.

• 2 exhaust the patience or interest of.

  ■ (tire of) become impatient or bored with.

– origin OE tēorian (also in the sense ‘fail, come to an end’), of unknown origin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tire2

▶noun US spelling of tyre.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tyre /ˈtʌɪə(r)/ (US tire)

▶noun

• 1 a rubber covering, typically inflated or surrounding an inflated inner tube, placed round a wheel to form a soft contact with the road.

• 2 a strengthening band of metal fitted around the rim of a wheel, especially of a railway vehicle.

– derivatives
tyred adjective.

– origin C15: perh. a var. of archaic tire, shortening of attire (because the tyre was the ‘clothing’ of the wheel).