1. Having a thickness made up of four layers or strands
   "four-ply yarns"

See also: thick

• appendicectomy
• appendicitis
• appendicle
• appendicular
• appendicular artery
• appendicular skeleton
• appendicular vein
• appendicularia
• appendix
• Appenzeller
• apperceive
• apperception
• apperceptive
• appertain
• appetence
• appetency
• appetent
• appetiser
• appetising
• appetisingness
• appetite
• appetite suppressant
• appetitive
• appetizer
• appetizing