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gunwale

1 ENTRIES FOUND:
gunwale /ˈgʌnl̟/ noun
plural gunwales
gunwale
/ˈgʌnl̟/
noun
plural gunwales
Britannica Dictionary definition of GUNWALE
[count]
: the upper edge of a ship's or boat's side see picture at boat

to the gunwales

informal + old-fashioned
: as full as possible