Entry: moktsu
Grammar: n.
Meaning: 1) younger sister's husband; 2) younger sister's husband's younger brother; 3) son-in-law; 4) husband of a younger or elder sibling's daughter; 5) grandson-in-law; 6) husband's younger sister's husband; 7) wife's younger sister's husband.
Derivation: [-tsu, tsuʔu 'child', cf. deltsu ]