Antennae

noun

1. A feeler organ on the head of an insect, crab, or other animal.
2. An apparatus to receive or transmit electromagnetic waves and convert respectively to or from an electrical signal.
3. The faculty of intuitive astuteness.
4. A fragment of an oligosaccharide
5. The spar to which a lateen sail is attached, which is then hoisted up the mast.