1heap 
/ˈhi:p/ noun
plural heaps /ˈhi:p/ noun [count] 1 : a large, disordered pile of things
▪ He dumped the grass clippings into the compost heap. ▪ a heap of old newspapers ▪ She left her dirty clothes in a heap on the floor. — see also scrap heap 2 informal : a great number or large amount of something
▪ He's in a heap of trouble! — often plural ▪ They've got heaps of money. 3 informal : an old car that is in poor condition
▪ I can't believe he's still driving that old heap.
▪ He dumped the grass clippings into the compost heap. ▪ a heap of old newspapers ▪ She left her dirty clothes in a heap on the floor. — see also scrap heap
▪ He's in a heap of trouble! — often plural ▪ They've got heaps of money.
▪ I can't believe he's still driving that old heap.
at the bottom/top of the heap
— used to describe a person's level of success, position in society, etc. ▪ Quite a few people applied for the job, but his past work experience put him at the top of the heap. [=made him the strongest candidate of the group] ▪ People at the bottom of the heap [=poor people] will not be helped much by the new tax cuts.
collapse/fall (etc.) in a heap
: to fall very suddenly to the ground and lie there
▪ Overcome by heat exhaustion, he collapsed/fell in a heap.
▪ Overcome by heat exhaustion, he collapsed/fell in a heap.
