Translation

• combined ideogram (one of the Six Methods 六書|六书[liu4 shu1] of forming Chinese characters)
• Chinese character that combines the meanings of existing elements
• also known as joint ideogram or associative compound
• to comprehend without being told explicitly
• to cotton on
• knowing (smile, glance etc)

Synonyms

• 会心, 心照不宣, 心领, 心领神会, 悟, 意会, 理会, 领会, 领悟