(law) Abbreviation of Turks and Caicos Islands.

(idiomatic) In politics, a lot of change can happen in a short space of time.

(US, slang) One is doomed (used as a threat).

Two parts of an organization are unaware of each other's activities.

An island in the Bay of Naples / The major town on this island

(Canada) Additional money paid to workers based in remote communities to compensate for higher living and travel costs.

(US) Alternative spelling of discretion is the better part of valour

(idiomatic) To be experienced or well-informed. / (idiomatic) To be astute, perceptive enough to observe a situation that is not what it seems and recognize its true nature.

(geology) An island of coral origin.

(geology) An island of volcanic origin.