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Nov 21, 2025
This week’s theme
Eponyms

This week’s words
Gallio
Babbittry
chauvinist
Dantean
Plimsoll line

plimsoll_line
TF:tropical fresh water
F:fresh water
T:tropical seawater
S:summer temperate seawater
W:winter temperate seawater
WNA:winter North Atlantic
BV:Bureau Veritas (the classification society that surveyed this vessel’s load line)
Photo: Wualex / Wikimedia

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A.Word.A.Day
with Anu Garg

Plimsoll line

PRONUNCIATION:
(PLIM-suhl/sohl lyn)

MEANING:
noun:
1. Any of various horizontal lines on the side of a ship indicating the depth to which it may be immersed under various conditions.
2. A threshold or limit.

ETYMOLOGY:
After Samuel Plimsoll (1824-1898), British MP, whose efforts led to the regulation of the shipping industry. Earliest documented use: 1877.

NOTES:
Samuel Plimsoll fought to prevent overloaded ships from becoming death traps. Before his reforms, unscrupulous shipowners would slap fresh paint on decrepit vessels, overfill them with cargo (sometimes junk disguised as valuables), and insure them for more than they were worth. These vessels, often called “coffin ships”, were more valuable when sunk (never mind the sailors on board).

Plimsoll’s campaign led to the Merchant Shipping Act, which set legal limits on how much cargo a ship could carry. The safety marks on a ship’s hull, known as the Plimsoll line or Plimsoll mark, indicate safe loading levels based on water type (salt or fresh), temperature, and other conditions.

Having saved countless sailors, Plimsoll turned his attention to another group suffering at sea -- cattle, which were often transported in horrific conditions on overcrowded ships.

And what about Plimsoll shoes? Originally designed as beachwear, they feature a horizontal band where the rubber sole meets the canvas upper -- resembling a Plimsoll line.

USAGE:
“I know that my plimsoll line of privacy stands far far higher than it does with the majority of mankind.”
Sir Denis Forman; Son of Adam; Little, Brown; 1992.

“I drink [the wines] gladly, right up to my Plimsoll line.”
Kevin Gould; Tea and wilderness; Financial Times (London, UK); Nov 19, 2011.

“[Hockey player Ric] Seiling was harpooned in a sensitive area, south of his plimsoll line, and he collapsed in great pain to the ice.”
Rex MacLeod; Strange Weakness Puts Fergus on Shelf; Toronto Star (Canada); Dec 29, 1986.

See more usage examples of Plimsoll line in Vocabulary.com’s dictionary.

A THOUGHT FOR TODAY:
To learn who rules over you, simply find out whom you are not allowed to criticize. -Voltaire, philosopher (21 Nov 1694-1778)

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