Word of the Day Word of the day: springtime 6 years agoAdd Commentby Macmillan Dictionary Views: 1,492 Written by Macmillan Dictionary The season of spring, between winter and summer. In some cultures of the northern hemisphere (e.g. the United Kingdom, Spain) the vernal equinox, which is between 19th and 21st March, marks the first day of spring. In other traditions, the equinox is taken as mid-spring.