WordNet sense 1 (time during which some action is awaited):

delay, hold, postponement, time lag

WordNet sense 2 (wait before acting):

hold off, hold back

WordNet sense 3 (serve as a waiter or waitress in a restaurant):

waitress

WordNet sense 4 (the act of waiting (remaining inactive in one place while expecting something)):

waiting

WordNet sense 5 (look forward to the probable occurrence of):

await, expect, look