Siamese twins

twins born with their bodies joined together in some way 连体双胞胎.

shut (sth) down, shut out, shut sb/oneself in (sth), shut sb/sth out (of sth), shut sth off, shut-down, shut-eye, shutter, shuttle, shuttle diplomacy, shuttle service, shuttlecock, shy, shy away from, shyly, shyness, shyster, SI, Siamese, Siamese cat, Siberia, Siberian, sibilant, sibling, sibyl, sibylline, sic, sick, sick of, sick-bay, sick-bed, sick-leave, sick-pay, sick-room, sicken, sickening, sickeningly, sickle, sickle cell, sickly,