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buttonhead

adjective
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Definition of buttonhead

 (Entry 1 of 2)

of a bolt, rivet, or screw
: having a head with a spherical exposed surface and plane shoulder, the height of the head being usually less than a hemisphere

buttonhead

noun
\ " \

Definition of buttonhead (Entry 2 of 2)

: a buttonhead bolt, screw, or rivet

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“Buttonhead.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/buttonhead. Accessed 4 Mar. 2021.

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