This means to lack, or have none of something.
CJK Ideographs are characters used in Chinese, Japanese and Korean languages. Their writing systems all completely or partly use Chinese characters.
📅 Japanese “Free of Charge” Button was approved as part of Unicode 5.2 in 2009
under the name “Squared CJK Unified Ideograph-7121”
and added to Emoji 1.0 in 2015.