(archaic) Pronunciation spelling of pianoforte.

(idiomatic, basketball) The NCAA strategy of playing a suffocating full-court press and aggressive offense for the entirety of a game.

(Canada, US) A nickname for the approximately 1200-mile (1900-kilometer) portion of the border between Canada and the USA, extending along the forty-ninth parallel of latitude from Lake of the Woods to the Pacific Ocean.

(Canada, US, idiomatic, obsolete) A very fast speed. / (Canada, US, slang, obsolete, by extension) The quality of being "fast", i.e. immoral in one's habits.

Mental or emotional strength that enables courage in the face of adversity. / (archaic) Physical strength.

The ordinal form of the number forty.

The person or thing in the fortieth position. / One of forty equal parts of a whole.

(music) Indicating that the piece is played very loud.

(music) The dynamic sign indicating that the piece should be played fortissimo. Abbreviation: ff.

The act of fortifying; the art or science of fortifying places to strengthen defence against an enemy.