WordNet sense 1 (a time for working (after which you will be relieved by someone else)):

go, tour, turn

WordNet sense 2 (a period of indeterminate length (usually short) marked by some action or condition):

patch, piece, while

WordNet sense 3 (a psychological state induced by (or as if induced by) a magical incantation):

enchantment, trance

WordNet sense 4 (a verbal formula believed to have magical force):

charm, magical spell, magic spell

WordNet sense 5 (write or name the letters that comprise the conventionally accepted form of (a word or part of a word)):

write

WordNet sense 6 (orally recite the letters of or give the spelling of):

spell out

WordNet sense 7 (indicate or signify):

import, import