A rip, a binge or a sign of sadness (4)

I believe the answer is:

tear

(Other definitions for tear that I've seen before include "Drop secreted by the lacrimal glands" , "charge" , "Rip - eye moisture" , "A drop of optical moisture" , "Rip, sever roughly" .)

I've seen this clue in The Irish Times and the Irish Times (Simplex).

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