Related Clues:

• Loose-goose connection
• Gray of "Gray's Manual of Botany"
• Free __ bird
• Red -- beet
• Actor Butterfield of 'Hugo'
• Slick-whistle connector
• "Solid ___ rock" (Ashford & Simpson lyric)
• Flat ___ pancake
• Neat -- pin
• White sheet insert?
• Sharp-tack center
• Mad-hatter connection
• Dead-doornail connection
• Flat -- board
• '___ reminder ...'