dʰreǵ-tó-
“something drawn or dragged”draft, draught, drastic
Participial derivative yielding Old English dræft "draft", Greek drastikos "effective" (done by force), English draft, draught, drastic.
Discussion
The Proto-Indo-European form *dʰreǵ-tó- is reconstructed as a past participle meaning "something drawn, something dragged" and belongs to a root family *dʰreǵ- "to draw, to pull, to drag" that produced a remarkably productive cluster of English words. The participial suffix *-tó- indicates a completed action, yielding a meaning close to "that which has been pulled".
In Germanic, the initial aspirated voiced stop *dʰ became *d, and the palatal *ǵ underwent characteristic centum merger with the plain velar, eventually producing a velar stop. The root gave Old English dragan "to draw, to drag", the ancestor of both draw and drag in modern English. These doublets reflect different dialectal developments of the same underlying verb. The word draught (and its American spelling draft) represents "something drawn" — drawn beer, a draught of air, a draft of a document.
More surprisingly, drink also descends from this root family, from a nasalised variant *dʰrenǵ-. The original meaning was "to draw in liquid" — drinking conceived as a pulling or drawing of fluid into the body. The semantic connection between drawing and drinking persists in expressions like "to draw water" from a well.
The word drench, meaning "to cause to drink" and later "to soak thoroughly", is the causative form of drink and thus another descendant. The word dray (a low cart for heavy loads, something dragged) preserves the original sense most transparently.
Outside Germanic, Latin trahere "to draw, to pull" (from a related but differently formed root) gave English attract, contract, extract, subtract, tractor, and trace. While the Latin forms derive from a parallel root rather than directly from *dʰreǵ-tó-, the semantic overlap is striking and may point to a deeper connection in the proto-language.
The family of draw, drag, drink, draught, and drench illustrates how a single physical action — pulling — could generate words for movement, consumption, and saturation.