
1) Ambergris source 2) Apex predator 3) Cetacean of the Arctic Ocean 4) Cetacean of the Indian Ocean 5) Cetacean prized for its oil 6) Largest living toothed animal
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https://www.crosswordclues.com/clue/sperm-whale

• A very large toothed whale (Physeter macrocephalus), having a head of enormous size. The upper jaw is destitute of teeth. In the upper part of the head, above the skull, there is a large cavity, or case, filled with oil and spermaceti. This whale sometimes grows to the length of more than eighty feet. It is found in the warmer parts of al......
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http://thinkexist.com/dictionary/meaning/sperm_whale/

the largest of the toothed whales, easily recognized by its enormous square head and narrow lower jaw. The sperm whale is dark blue-gray or brownish, ... [7 related articles]
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http://www.britannica.com/eb/a-z/s/139

<zoology> A very large toothed whale (Physeter macrocephalus), having a head of enormous size. The upper jaw is destitute of teeth. In the upper part of the head, above the skull, there is a large cavity, or case, filled with oil and spermaceti. This whale sometimes grows to the length of more than eighty feet. It is found in the warmer parts...
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http://www.encyclo.co.uk/local/20973
Sperm' whale` (Zoology) A very large toothed whale (
Physeter macrocephalus ), having a head of enormous size. The upper jaw is destitute of teeth. In the upper part of the head, above the skull, there is a large cavity, or case, filled with oil and spermaceti. This whale sometimes grows to the length of more than ei...
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http://www.encyclo.co.uk/webster/S/160

The Sperm Whale (Physeter macrocephalus) is the largest of the toothed whales, with a long and massive head comprising roughly one third of its total length.
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http://www.probertencyclopaedia.com/browse/BSB.HTM

[
n] - large whale with a large cavity in the head containing spermaceti and oil
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http://www.webdictionary.co.uk/definition.php?query=sperm%20whale
cachalot noun large whale with a large cavity in the head containing spermaceti and oil; also a source of ambergris
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https://www.encyclo.co.uk/local/20974
No exact match found.