The word "linga" (लिङ्ग) refers to gender in Sanskrit and Hindi. Therefore, "linga ka stri" translates to "gender's feminine" or "feminine gender." The feminine form of a masculine noun is its "stri linga."

For example:

• Beta (बेटा) (son) - masculine
• Beti (बेटी) (daughter) - feminine

In this case, "beti" is the "stri linga" or feminine gender form of "beta".