English: mixed ley
Welsh: gwyndwn cymysg
Subject: Amaeth
Welsh definition: Tir sydd wedi'i hau â chymysgedd o hadau glaswellt, codlysiau a blodau.
English context:  * If you have less than the 10% habitat needed to meet the scheme requirement you can create new temporary habitat features on improved land, such as mixed leys or fallow crop margins. [1]
Welsh context: Os oes gennych lai na'r 10% o gynefin sydd ei angen i fodloni gofynion y cynllun, gallwch greu nodweddion cynefin newydd dros dro ar dir wedi'i wella, fel gwyndynnydd cymysg neu ymylon o wyndwn.
Plural: gwyndynnydd cymysg