1. As much as a glass holds.

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

• blessful,
• flassful,
• vlassful,
• hlassful,
• ylassful,
• tlassful,
• gkassful,
• gpassful,
• goassful,
• glzssful,
• glsssful,
• glwssful,
• glqssful,
• glaasful,
• glasful,
• glassfull,
• gladfil,
• glassfuls,
• glassfulls,
• loassful

• graceful,
• glassford,
• glassblower.

The adjective form of the word "glassful" is "glassful". The word functions as both a noun and an adjective.

The plural of the "glassful" can be the "glassfuls".

The singular of the "glassful" can be the "glassful".