pile
UK[paɪl]US[paɪl]
n
A number of things lying on top of one another; a heap.
n
A large, heavy post or beam of timber, steel, or concrete driven into the ground to support a structure.
v
To place things one on top of another in a heap.
Etymology
The word 'pile' entered English in the late Middle English period from Old French 'pil', which itself derived from Latin 'pīla', meaning a 'pillar' or 'stone barrier'. The Latin term is thought to be of obscure origin, though some scholars suggest a possible connection to the Proto-Indo-European root peys-, meaning 'to crush'. This etymological journey explains the word's dual modern meanings: the sense of a 'heap' developed from the idea of things stacked like a column, while the sense of a structural 'post' is a direct inheritance from the original Latin meaning of a pillar or pier.
Analysis
This word is a simplex loanword from Latin via Old French. Its spelling and form do not allow for segmentation into productive morphemes in modern English.
Examples
She sorted the documents into neat piles on her desk.
The bridge rests on concrete piles driven deep into the riverbed.
He began to pile the logs next to the fireplace for the winter.