1) Balance 2) Beachhead 3) Bridgehead 4) Combat area 5) Combat zone 6) Grip 7) Secure position 8) Sturdy place to stand 9) Supporting place 10) Traction 1) Beachhead 2) Bridgehead 3) Footing 4) Grip 
• (n.) A holding with the feet; firm standing; that on which one may tread or rest securely; footing.
Foot'hold` noun A holding with the feet; firm standing; that on which one may tread or rest securely; footing. L'Estrange. 
[n] - a place providing support for the foot in standing or climbing
footing noun a place providing support for the foot in standing or climbing
a place or support for the feet; a place where a person may stand or walk securely. · a secure position, esp. a firm basis for further progress or development: They gained a foothold in the New York market before beginning their national campaign.