1. Of a dark shade of grey
   - oxford-grey [Brit, Cdn], oxford-gray [US], dark-grey [Brit, Cdn]

See also: achromatic, neutral

• butterwort
• buttery
• butthead
• buttie
• buttinsky
• buttle
• buttock
• buttocks
• button
• button fern
• button mangrove
• button pink
• button snakeroot
• button tree
• button up
• button-down
• button-quail
• button-shaped
• buttoned
• buttoned-down
• buttoned-up
• buttonhole
• buttonhole stitch
• buttonhook
• buttonlike