brownie

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A member of the Girl Scouts from six through eight years of age.
2. n. A bar of moist, usually chocolate cake, often with nuts.
3. n. A small sprite thought to do helpful work at night.
4. n. A brown trout.

Century Dictionary and Cyclopedia

1. n. In Scotland, a spirit supposed to haunt houses, particularly farm-houses. The brownie was believed to be very useful to the family, particularly if treated well by them, and to the servants, for whom while they slept he was wont to do many pieces of drudgery. In appearance the brownie was said to be meager, shaggy, and wild.

Wiktionary

1. n. a small rich cake, usually made with chocolate, usually brown and square.
2. n. a mythical creature, a kind of elf that would do people's housework for them.
3. n. A household spirit or ancestor revered in the modern pagan faith of Heathenry.
4. n. A tall, long-necked beer bottle, made from brown coloured glass.

GNU Webster's 1913

1. n. An imaginary good-natured spirit, who was supposed often to perform important services around the house by night, such as thrashing, churning, sweeping.

WordNet 3.0

1. n. (folklore) fairies that are somewhat mischievous
2. n. square or bar of very rich chocolate cake usually with nuts
3. n. a junior Girl Scout