(British, Ireland) An ice cream cone with a Cadbury's Flake (stick of chocolate) inserted into the ice cream.

Of telephone numbers dialed in North America, having an additional charge assessed to the caller, part of which is returned to the owner of the number.

plural of 900 number

(Canada, US) A telephone number for which an extra charge is assessed, part of which is returned to the owner of the number.

(US Army, US Air Force and US Navy, derogatory, slang) Newly-commissioned graduate of three-month Officer Candidate School (Army, Air Force), Midshipman School (Navy), or Direct Commissioning program.

An ISDN connection protocol somewhat similar to TCP.

(UK, Ireland, HK, Singapore, colloquial, metonymically) Emergency services; emergency service personnel.

The telephone number for emergency services in the United Kingdom, Ireland, Hong Kong, Macau, Malaysia, Bangladesh, Burma, Bahrain, Qatar, the UAE, Kenya, Uganda, Zambia, Zimbabwe, Ghana, Sudan, South Sudan, Sierra Leone, Guyana, Antigua and Barbuda, Saint Lucia, Saint Vincent, Dominica, Kiribati, Samoa, the Solomon Islands, and the Seychelles.

(oncology) The vitamin biotin labelled with radioactive (yttrium-90), used in the treatment of cancer, where it seeks out tumor cells that have been targeted by an antibody linked to streptavidin and kills them.

(physics) The radioactive isotope of strontium, ⁹⁰₃₈Sr, that is present in the fallout from nuclear explosions and, being chemically similar to calcium, is accumulated in the bones