Meanings

mealtime

mealtime

nearly one hour

(approx.) four o'clock (am or pm, old time system)

Greenwich Time

compile time

slot time (in CSMA-CD)

cycle time

(in an) emergency

compilation time

round trip time

fairly long period of time

to kill time

peak time

nine-to-five (working hours)

nine-to-five (working hours)

time to oneself

(your) time

man-hour

one hour