- Cards.
- a person who holds a hand so strong that they can play a deal without the hand of their partner.
- the hand played by a person whose hand is strong enough to play a deal without a partner.
- a person who by preference conducts their affairs without the advice or assistance of others: She is known as a lone hand in investment circles.
- a stand or action taken independently: A lone hand in the trade negotiations threw off all plans.
- (in card games such as euchre) an independent player or hand played without a partner
- to operate without assistance