Fricative

A fricative (consonant) (a manner of articulation) is a consonant produced by passing the air through a narrow passage with audible friction.

Fricative is a sound that is articulated in such a way that the articulators are brought very close together; the air is forced through this narrow opening. A hissing sound is the result.

Examples
E.g., [f], [s], [þ], [ð]

English [s] in sea or [f] in flow.

Origin
Based on Latin fricare 'rub'.

Other languages
German Frikativ

Link
Utrecht Lexicon of Linguistics