2.AdjectiveHaving, or consisting of, two superposed planes, aerocurves, etc."a biplane rudder; .mw-parser-output .maintenance-box{width:90%;margin:0.75em auto;border-width:1px;border-style:dashed;padding:0.25em}body.skin-vector-2022 .mw-parser-output .maintenance-box>table td p:last-of-type{margin-bottom:0.25em}.mw-parser-output .maintenance-box-image-cell{padding:0 0.5em}.mw-parser-output .request-box{margin:0.75em 1em 0.75em 1em;border:1px dashed var(--border-color-base,#999999);padding:0.25em;background:var(--background-color-base,#FFFFFF)}body.skin-minerva .mw-parser-output .request-box table{margin-top:0.25em;margin-bottom:0.25em}.mw-parser-output .maintenance-box-blue{background-color:var(--wikt-palette-indigo-2,#E6E6FF);border:1px dashed var(--wikt-palette-indigo-9,#000061)}.mw-parser-output .maintenance-box-red{background-color:var(--wikt-palette-red-2,#FFE6E6);border:1px dashed var(--wikt-palette-red-9,#610000)}.mw-parser-output .maintenance-box-yellow{background-color:var(--wikt-palette-yellow-2,#FFFFE6);border:1px dashed var(--wikt-palette-yellow-9,#616100)}.mw-parser-output .maintenance-box-grey{background-color:var(--wikt-palette-grey-2,#F2F2F2);border:1px dashed var(--wikt-palette-grey-9,#303030)}.mw-parser-output .maintenance-box-orange{background-color:var(--wikt-palette-orange-2,#FFF2E6);border:1px dashed var(--wikt-palette-orange-9,#612F00)}(This entry needs quotations to illustrate usage. If you come across any interesting, durably archived quotes, then please add them!)"