trump; trump card / (figuratively) trump; trump card; last resort; ace up one's sleeve; ace in the hole; secret weapon

antique clock, grandfather clock

The katakana syllable ファ (fa). Its equivalent in hiragana is ふぁ (fa).

(music) fa, the fourth note of a major scale

(music) fugue

rifle

(card games) strip hanafuda, a Japanese card game similar to strip poker played with hanafuda playing cards, whereby the loser has to remove an item of clothing

a fax (either the device for transmitting facsimiles, or the transmitted document)

Nizhny Novgorod (an oblast of Russia) / Nizhny Novgorod (a city, the administrative center of Nizhny Novgorod Oblast, Russia)

a pendulum