κεραία

Etymology
From.

Noun

 * 1) antennae of the crayfish or of insect
 * 2) anything projecting like a horn, hence:
 * 3)  yardarm
 * 4) projecting beam of a crane
 * 5) projecting parts of the huckle bone
 * 6) branching stake of wood, used as a pale in palisades
 * 7)  horns of the moon
 * 8)  apex of a letter
 * 9) leg of a pair of compasses
 * 10) projecting spur of a mountain
 * 11)  supposed teat-like projections inside the womb
 * 12) bow made of horn

Etymology
From.

Noun

 * 1)  aerial, antenna
 * 2)  horn, antenna, feeler
 * 3)  spar, yard