boon

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A benefit bestowed, especially one bestowed in response to a request.
2. n. A timely blessing or benefit: A brisk breeze is a boon to sailors.
3. adj. Convivial; jolly: a boon companion to all.
4. adj. Archaic Favorable.

Century Dictionary and Cyclopedia

1. n. A prayer; a petition.
2. n. That which is asked; a favor; a thing desired; a benefaction.
3. n. Hence A good; a benefit enjoyed; a blessing; a great privilege; a thing to be thankful for.
4. n. An unpaid service due by a tenant to his lord.
5. To do gratuitous service to another, as a tenant to a landlord.
6. n. The refuse stalk of hemp or flax after the fiber has been removed by retting and breaking.
7. Good: as, boon cheer.
8. Favorable; fortunate; prosperous: as, a boon voyage.
9. Kind; bounteous; yielding abundance: as, “nature boon,”
10. Gay; merry; jolly; jovial; convivial: as, a boon companion; “jocund and boon,”

Wiktionary

1. n. obsolete A prayer; petition.
2. n. archaic That which is asked or granted as a benefit or favor; a gift; a favour; benefaction; a grant; a present.
3. n. A good; a blessing or benefit; a great privilege; a thing to be thankful for.
4. n. An unpaid service due by a tenant to his lord.
5. adj. obsolete good; prosperous; as, "boon voyage"
6. adj. kind; bountiful; benign
7. adj. gay; merry; jovial; convivial
8. n. The woody portion of flax, separated from the fiber as refuse matter by retting, braking, and scutching.

GNU Webster's 1913

1. n. obsolete A prayer or petition.
2. n. That which is asked or granted as a benefit or favor; a gift; a benefaction; a grant; a present.
3. adj. obsolete Good; prosperous.
4. adj. Kind; bountiful; benign.
5. adj. Gay; merry; jovial; convivial.
6. n. The woody portion flax, which is separated from the fiber as refuse matter by retting, braking, and scutching.

WordNet 3.0

1. n. a desirable state
2. adj. very close and convivial