• WordNet 3.6
    • n heaume a large medieval helmet supported on the shoulders
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Century Dictionary and Cyclopedia
    • n heaume In medieval armor, a helm or helmet; specifically, a large helmet worn during the twelfth and thirteenth centuries, usually over an inner defense, such as the coif of mail, or the basinet. It rested upon the shoulders, the head in some cases being free to move within it, and was worn only in battle. Its great weight led to the adoption of the armet, which adapted itself to the form of the head, and allowed of movement in all directions.
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Chambers's Twentieth Century Dictionary
    • n Heaume hōm (arch.) a massive helmet.
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In literature:

The helmet, or Heaume, entirely concealed the face, so that for purposes of identification, heraldic badges and shields were displayed.
"Arts and Crafts in the Middle Ages" by Julia De Wolf Addison
This was used alternately to, and even in conjunction with, the large heavy heaume.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3" by Various
The larger and heavier salades were also often used instead of the heaume in tournaments.
"Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 2" by Various

In poetry:

A ship with sails before the wind,
And round the helm six knights,
Their heaumes are on, whereby, half blind,
They pass by many sights.
"Near Avalon" by William Morris
The tatter'd scarlet banners there
Right soon will leave the spear-heads bare.
Those six knights sorrowfully bear
In all their heaumes some yellow hair.
"Near Avalon" by William Morris