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WordNet-Online
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Noun elf has 2 senses
- elf, hob, gremlin, pixie, pixy, brownie, imp - (folklore) fairies that are somewhat mischievous
--1 is a kind of atmospheric electricity; fairy, faery, faerie, sprite; atmospheric electricity; fairy, faery, faerie, sprite
--1 has particulars: leprechaun; sandman
- extremely low frequency, ELF - below 3 kilohertz
--2 is a kind of radio frequency; radio frequency
--2 is a part of electromagnetic spectrum
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