This is the 22nd most frequent Chinese word.
说
"说" means "to speak," "to say," or "to explain."
In this sentence, the word '说' (shuō) is used as a verb meaning 'to say' or 'to speak', indicating someone conveying information through speech.
他说他今天很忙。
He said he is very busy today.
Here, '说' (shuō) is used as part of the verb '说明' (shuōmíng), which means 'to explain', showing that in combination with another character, it forms a compound verb.
请你说明你的意思。
Please explain your meaning.
In this context, '说' (shuō) retains its meaning 'to speak' but is used imperatively to suggest performing the action of speaking.