Mushtarak: the expression has distinct established meanings; the intended sense of a given occurrence may still need identification. Example: qurʾ as menstruation or purity.
Muʾawwal: one sense becomes stronger through reasoned opinion; practice follows it, with a possibility of error. Example: the Hanafi reading of qurʾ as menstruation.
Mufassar: the speaker’s own clarification resolves the sense in the situation described by the footnote; the text treats its application as categorical.
The three labels mark how a meaning is identified and how strong that identification is.