עָצַם

ʻâtsam. a primitive root; also denominatively (from עֶצֶם); to bind fast, i.e. close (the eyes); intransitively, to be (causatively, make) powerful or numerous; to crunch the bones; break the bones, close, be great, be increased, be (wax) mighty(-ier), be more, shut, be(-come, make) strong(-er).