The term 'bottle top' refers to the components of a bottle that are used to seal it. The crossword solutions for this term include CAP (3 letters), NIPPLE (6 letters), LID (3 letters), NECK (4 letters), and SCREWCAP (8 letters). A CAP is a small, usually circular piece of material that fits over the opening of the bottle. A NIPPLE is a short tube that fits into the NECK of the bottle and is used to control the flow of liquid. A LID is a flat piece of material that fits over the opening of the bottle. The NECK is the narrow part of the bottle that connects the body to the opening. Finally, a screwcap is a metal or plastic CAP that screws onto the NECK of the bottle.