gem

Short definition from Wiktionary

Noun

1. 1
   A precious stone, usually of substantial monetary value or prized for its beauty or shine.
2. 2
   Any precious or highly valued thing or person.
3. 3
   Anything of small size, or expressed within brief limits, which is regarded as a gem on account of its beauty or value, such as a small picture, a verse of poetry, or an epigram.
4. 4
   A gemma or leaf bud.
5. 5
   A geometrid moth of the species Orthonama obstipata.
6. 6
   A package containing programs or libraries for the Ruby programming language.
7. 7
   A size of type between brilliant (4-point) and diamond (4½-point), running 222 lines to the foot.
8. 8
   A strong, dominating pitching performance.
9. 9
   Internet content of good quality.
10. 10
    A native or resident of the American state of Idaho.
11. 11
    Initialism of ground-effect machine.
12. 12
    Acronym of Graphite-Epoxy Motor.

Verb

1. 1
   To adorn with, or as if with, gems.

Proper noun

1. 1
   A ghost town in California.
2. 2
   An unincorporated community in Indiana.
3. 3
   A city in Kansas.
4. 4
   A diminutive of the female given name Gemma.