*SET-U

English word origin

Etymology of Leech

* As an English surname, variant of Leach. * As an Irish surname, from Liaigh (“physician”) (a calque of the English surname) or Ó Laoghóg (“descendant of Laoghóg”) and Ó Maolmhaodhóg (“descendant of Maolmhaodhóg”); see

1 source sectionExtended source reportWiktionary original ↗
In this entry · 1 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology

Original entry ↗
name

A surname originating as an occupation, derived from the profession leech, a former word for a physician.

Selected source glosses provide context, not a complete modern definition inventory

* As an English surname, variant of Leach. * As an Irish surname, from Liaigh (“physician”) (a calque of the English surname) or Ó Laoghóg (“descendant of Laoghóg”) and Ó Maolmhaodhóg (“descendant of Maolmhaodhóg”); see Logue.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ga",
        "3": "-"
      },
      "expansion": "Irish"
    }
  ],
  "links": [
    [
      "Leach",
      "Leach#English"
    ],
    [
      "Liaigh",
      "Liaigh#Irish"
    ],
    [
      "Ó Laoghóg",
      "Ó Laoghóg#Irish"
    ],
    [
      "Ó Maolmhaodhóg",
      "Ó Maolmhaodhóg#Irish"
    ],
    [
      "Logue",
      "Logue#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "name",
      "glosses": [
        "A surname originating as an occupation, derived from the profession leech, a former word for a physician."
      ],
      "tags": [],
      "recordId": "80720a2728b80aa8faaae5c3cc7844b1e715937065a6f82bdcb95317658420bb",
      "rawRecordSha256": "9fb3cb717cc2b7eaf78e25a372d481b3ddcc48db04e3679db156dfc47fc056cb",
      "sourceRecordOrdinal": 6549957
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}

Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for Leech →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-TGVlY2g