convenience

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun The quality of being suitable to one's comfort, purposes, or needs.
• noun Personal comfort or advantage.
• noun Something that increases comfort or saves work: synonym: amenity.
• noun A suitable or agreeable time.
• noun Chiefly British A lavatory.

from The Century Dictionary.

• noun 1. A coming together; assemblage; conjunction; joinder.
• noun The state or character of being convenient; fitness; suitableness; adaptation; propriety.
• noun Freedom from discomfort or trouble; ease in use or action; comfort.
• noun That which gives ease or comfort; that which is suited to wants or necessity; that which is handy; an accommodation.
• noun A convenient appliance, utensil, or other article, as a tool, a vehicle, etc.
• noun . Agreement; consistency.
• To provide with facilities and accommodations which make for ease, comfort, effectiveness in action, movement, or the like; accommodate.

from the GNU version of the Collaborative International Dictionary of English.

• noun The state or quality of being convenient; fitness or suitableness, as of place, time, etc.; propriety.
• noun Freedom from discomfort, difficulty, or trouble; commodiousness; ease; accommodation.
• noun That which is convenient; that which promotes comfort or advantage; that which is suited to one's wants; an accommodation.
• noun A convenient or fit time; opportunity.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the quality of being suitable, useful or convenient
• noun anything that makes for an easier life
• noun a convenient time, especially in the phrase at one's convenience
• noun chiefly UK a public toilet

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a device or control that is very useful for a particular job
• noun the state of being suitable or opportune
• noun a toilet that is available to the public
• noun the quality of being useful and convenient