The phrase "golf clap" means a polite and restrained type of applause, usually demonstrated by lightly and quietly clapping the hands together, similar to the applause you might hear at a golf tournament. Full definition
The room, full of insurers, regulators, auto dealers, and parts manufacturers, was silent for a moment before a «slow golf clap» began to build, Zimmer says. (fortune.com)
@themichellewie Golf claps may be dainty, but there's nothing feeble about Michelle Wie's landmine deadlift with a shoulder press. (dailyburn.com)