姑 - mother-in-law

mother-in-law

dilly-dallying and temporizing (temporising)

Chinese water chestnut (Eleocharis dulcis var. tuberosa)

Eleocharis kuroguwai (species of spikerush)

Ma Gu; legendary Taoist immortal with long talon-like fingernails

underhanded; unfair

conflict between a bride and her mother-in-law; bride and mother-in-law war

sister-in-law

Chinese water chestnut (Eleocharis dulcis)

mother-in-law (of the husband)

parents-in-law

Sagittaria trifolia var. edulis (edible variant of threeleaf arrowhead)