h₂eḱ-men-
“stone, sharp stone”stone, rock
Root for stone, yielding Greek akmon (anvil), Lithuanian akmuo (stone), Sanskrit asman-.
Discussion
The Proto-Indo-European form *h₂eḱ-men- is a suffixed derivative of the root *h₂eḱ- (sharp, pointed), reconstructed by Pokorny (IEW 18–22) among a large cluster of forms relating to sharpness, edges, and stone. The *-men- suffix, one of PIE's most productive noun-forming extensions, here yielded a term whose core meaning hovered between sharp stone and the tool or surface fashioned from it. The Greek reflex ákmōn (anvil) preserves the instrumental sense — the hard stone surface on which metal is worked — and in mythological usage it becomes a figure for unyielding hardness, as when Zeus hurls enemies down to Tartarus, a fall measured in ákmōn-distances. Sanskrit áśman- (stone, rock, thunderbolt) retains the raw material sense while extending it skyward: Indra's weapon, the celestial stone, is áśman-, linking lithic hardness to divine violence in a pattern attested across several IE traditions. Lithuanian akmuõ (stone) continues the form with textbook Baltic phonology, preserving the old accent pattern and the *-men- stem class with a faithfulness that has made Baltic forms indispensable to PIE reconstruction since Schleicher. The semantic range of the derivatives — from raw stone to anvil to thunderbolt — illuminates a conceptual world in which stone was simultaneously material, tool, and weapon, categories not yet fully distinguished in the lexicon. Beekes notes that the Greek form points to an original accent on the suffix, consistent with the agentive or instrumental function typical of accented *-men- formations. Watkins groups the root with Latin acēr (sharp), acies (edge), and acidus (sour, sharp-tasting), as well as English edge itself, which descends from the same *h₂eḱ- through Germanic *agjō-. The stone-word *h₂eḱ-men- thus belongs to a vast family of sharpness terms, but it is distinguished by its concrete, almost tactile specificity: not sharpness as quality, but the sharp stone you hold in your hand, strike metal upon, or see falling from a storm-darkened sky.
Notes
Pokorny 18-22. Related to *h2ek- (sharp).