Slight correction: the contemporaneous usage of the word lesbian in the queer community does not specifically say it is wlw, but that it is femme/non-masculine attraction to femininity/non-masculinity. In that sense it may be more closely aligned with being sapphic than strictly wlw.
Transgender women are women.
Women who love women exclusively are lesbians.
So, yes.
Slight correction: the contemporaneous usage of the word lesbian in the queer community does not specifically say it is wlw, but that it is femme/non-masculine attraction to femininity/non-masculinity. In that sense it may be more closely aligned with being sapphic than strictly wlw.