1

hairpin

noun hair·pin \ ˈher-ˌpin \
Updated on: 10 Apr 2018

Definition of hairpin

1 : a pin to hold the hair in place; specifically : a long U-shaped pin
2 : something shaped like a hairpin; specifically : a sharp U-shaped turn in a road

Recent Examples of hairpin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hairpin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hairpin

1771

in the meaning defined at sense 1

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2

hairpin

adjective

Definition of hairpin

: having the shape of a hairpin
  • a hairpin turn
; also : having hairpin turns
  • a steep hairpin road

Recent Examples of hairpin from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hairpin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of hairpin

1887

in the meaning defined above

See Words from the same year
NEW! Time Traveler

HAIRPIN Defined for English Language Learners

hairpin

Definition of hairpin for English Language Learners

  • : a pin that is worn in your hair; especially : a pin shaped like a U that is worn to hold your hair in place

  • : an extremely sharp turn in a road that is shaped like a U


HAIRPIN Defined for Kids

hairpin

noun hair·pin \ ˈher-ˌpin \

Definition of hairpin for Students

: a pin in the shape of a U for holding the hair in place

Medical Dictionary

hairpin

noun hair·pin \ ˈha(ə)r-ˌpin, ˈhe(ə)r- \
variants: also hairpin loop

medical Definition of hairpin

: a region in single-stranded RNA or DNA that is double-stranded due to pairing between purine and pyrimidine bases in adjacent sequences of the RNA or DNA that are complementary and inverted


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