3 to reduce in size or volume by or as if by pressing parts or members together //the novel collapses events from four separate trips into one long odyssey capsule//The performer collapsed on stage. 6 : to fold down into a more compact shape //a chair that collapses //a collapsing golf club that can fit into a travel bag
transitive verb1 : to cause to collapse //buildings collapsed by an earthquake //He knelt for a long time, first watching the bay below, then collapsing the spyglass and settling his hands on his legs in a thoughtful pose. — Heather Dunboine
2 : condense //collapse several stories into one