CACrown ArchivesHistory · sources · collections
Menu
Research dossier · General Reference

Defenceman

position in ice hockey

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 16, 2026
Entity authorityQ2304909
Source-derived summary

Defenceman or defense (in American English) in ice hockey is a player position that is primarily responsible for preventing the opposing team from scoring. They are often referred to as defencemen, D, D-men or blueliners (the last a reference to the blue line in ice hockey which represents the boundary of the offensive zone; defencemen generally position themselves along the line to keep the puck in the zone). They were once called cover-point.

In regular play, two defencemen complement three forwards and a goaltender on the ice. Exceptions include overtime during the regular season and when a team is short-handed (i.e. has been assessed a penalty), in which two defencemen are typically joined by only two forwards and a goaltender; when a team is on the power play (i.e. the opponent has been assessed a penalty), teams will often play only one defenceman, joined by four forwards and a goaltender. In the National Hockey League's regular season play in overtime, effective with the 2015–16 season, teams usually have only three position players and a goaltender on the ice, and may use either two forwards and one defenceman, or in rare cases – two defencemen and one forward.

Historical designations

Organized play of ice hockey originates from the first indoor game in Montreal in 1875. In subsequent years, the number of players per side was reduced to seven.

Editorial summary

“Defenceman” enters the record as position in ice hockey. Crown Archives preserves that source wording while asking what Defenceman, position and hockey can confirm, complicate or overturn.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—2015, 1875—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Defenceman, position and hockey.
Editorial analysis

Why this record matters

“Defenceman” is worth following because a concise public description often conceals a longer documentary argument. Here, Defenceman, position and hockey provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 16, 2026. The linked authority identifier is Q2304909. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2015 and 1875.

Critical limits

A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Defenceman”, its source revision and the description used here.
  2. Expand the search: follow Defenceman primary sources, Defenceman archive and Defenceman research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Defenceman”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from Defenceman” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.