waning moon
second half of a lunar month, when the lit portion of the Moon seen from the Earth is shrinking, between the full moon and the next new moon
last quarter
phase of the Moon where the lunar disc visible from Earth is 50% lit, on the part pointing to the East; waning half moon
waning gibbous moon
phase of the Moon where the lunar disc visible from Earth is 99–51% lit, on the part pointing to the East; disseminating moon
waning crescent moon
phase of the Moon where the lunar disc visible from Earth is 49–1% lit, on the part pointing to the East; balsamic moon; old moon