Definition of breastsummer in English:

breastsummer

Line breaks: breast|sum¦mer
Pronunciation: /ˈbrɛs(t)sʌmə
 
/

noun

Architecture
A beam across a broad opening, sustaining a superstructure.
More example sentences
  • There is an exquisite little parlour, lined with linen fold panels, with a breastsummer carved with strange animals.

Origin

early 17th century: from breast and summer2.

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bearing bristles or setae; bristly