N-COUNT
(日)食;(月)食
An eclipse of the sun is an occasion when the moon is between the earth and the sun, so that for a short time you cannot see part or all of the sun. An eclipse of the moon is an occasion when the earth is between the sun and the moon, so that for a short time you cannot see part or all of the moon.
例句
...an eclipse of the sun.
日食
...the solar eclipse on May 21st.
5月21日的日食