different between blackhead vs blockhead

English

Etymology

black + head

Noun

blackhead (countable and uncountable, plural blackheads)

1. (countable, medicine) A comedo, a skin blemish, a type of acne vulgaris, where a pore becomes clogged with a dark, hard, cheesy keratin-filled substance forming a hard black "head" on the skin's surface.
2. (uncountable) A form of histomoniasis in poultry, characterized by cyanotic discoloration on the bird's head.
3. (countable) A scaup: any of various ducks of the genus Aythya.

Translations

Further reading

• blackhead on Wikipedia.Wikipedia
• Blackhead in the 1920 edition of Encyclopedia Americana.

English

Alternative forms

• block head, block-head

Etymology

1549, block (“n.”) +? head.

Pronunciation

Noun

blockhead (plural blockheads)

1. (colloquial) A stupid person.
2. A sideshow performer who hammers nails or similar items through his or her nostril into the nasal cavity; human blockhead.

Synonyms

• See also Thesaurus:idiot

Derived terms

• blockheaded
• blockheadess

Translations

Verb

blockhead (third-person singular simple present blockheads, present participle blockheading, simple past and past participle blockheaded)

1. To perform as a human blockhead.
2. (rare) To behave in a stupid manner.

Anagrams

• headblock