(sports, ice hockey) Initialism of International Ice Hockey Federation.

(management) “chief X officer”, with X as functional placeholder (finance, operating etc.) / Initialism of chief experience officer.

Any of many cartilaginous fish of the subclass Elasmobranchii.

Pertaining to the zoologic order Cetacea, or associated with species falling under that taxonomic hierarchy. / (by extension, sometimes figuratively) Resembling or relating to large aquatic mammals.