Definition of swarm up in English:

swarm up

Climb (something) rapidly by gripping it with one’s hands and feet, alternately hauling and pushing oneself upwards: I swarmed up the mast
More example sentences
  • One of the more grandiose images, of a crowd swarming up the mount to hear a sermon from Christ as the sun slowly sets, wasn't planned and came about purely by accident.
  • Police then moved the exercise to Stormont, swarming up to the home of the power-sharing government in a train of armoured Land Rovers.
  • They swarmed up the levelled rock blockage, pushed through the gap that Tiffany had blasted, dragging at rock that crumbled at their touch.
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Word of the day animalcule
Pronunciation: ˌanɪˈmalkjuːl
noun
a microscopic animal