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Full Idea
The procedure of abstraction will not allow us to distinguish the ambiguity between 'mole' as an animal and as an artefact. The stages of abstraction will only end up with 'physical object', and this will then count as the definition.
Clarification
A mole is a stone sea-wall
Gist of Idea
Abstraction from an ambiguous concept like 'mole' will define them as the same
Source
Jonathan Barnes (Commentary on 'Posterior Analytics [1993], n to 97b7)
Book Ref
Aristotle: 'Posterior Analytics (2nd ed)', ed/tr. Barnes,Jonathan [OUP 1993], p.249
A Reaction
This is a problem if you adhere to a rather precise account of the steps of abstraction, with every stage explicit (and probably expressed in terms of sets), but I suspect that the real tangle of semi-conscious abstraction avoids this problem.