to gather; to crowd round; to swarm; to flock
to sponge (off someone); to scrounge; to pester (someone for something); to bum; to cadge
to extort; to take (money) through intimidation
蚊が明かりにたかっている。
Mosquitoes are swarming around the light.
いつも人にたかるのはやめなさい。
Stop always sponging off others.
甘い物にハエがたかってきた。
Flies swarmed onto the sweets.