1. The leaf of a folding-door; a lid or cover to an aperture, so formed as to open a communication in one direction and close it in the other; one of the pieces into which a pericarp naturally separates when it bursts; one of the divisions of a shell.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• vaule,
• valuie,
• valuve,
• vallue,
• vavle,
• dealve,
• velue,
• bilve,
• valuye,
• velive,
• valaue,
• valvaue,
• voive,
• alove,
• valare,
• valvess,
• vulue,
• valrie,
• vrave,
• valua

• valvo.

The adjective form of the word "valve" is "valvular".

The plural form of the word "valve" is "valves"

The singular form of the word "valve" is "valve". The word remains the same in both plural and singular form.