S1I1B3L1I1N1G2S1
11 points
SIBLINGS is validvalid
SIBLING, one having the same parents as another [n]
SIBLING, one who has the same parents as another, also SIB, SIBB [n]
SIBLING, one having the same parents as another [n]
SIBLING, one who has the same parents as another, also SIB, SIBB [n]