a conceited person
WordReference Random House Unabridged Dictionary of American English © 2025
big•head
(big′hed′, -hed′),USA pronunciation n.
big′head′ed, adj.
big′head′ed•ness, n.
- Informal Termsan excessive estimate of one's importance;
conceit. - Veterinary Diseases
- an inflammatory swelling of the tissues of the head of sheep, caused by the anaerobic bacillus Clostridium novyi.
- enlargement of the head and jawbones of horses resulting from nutritional hyperthyroidism.
- big1 + head 1795–1805, American.
big′head′ed•ness, n.
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