scabbard

n. （刀、剑）鞘，枪套

savvy, saw, saw-horse (US also `sawbuck), sawdust, sawmill, sawyer, sax, saxifrage, Saxon, saxophone, saxophonist, say, say nothing about, say to oneself, say yes, say-so, SAYE, saying, sc, scab, scabby, scabies, scabious, scabrous, scad, scads, scaffold, scaffolding, scalar, scalawag, scald, scalding, scale, scalene, scales, scallion, scallop (also scollop), scallywag, scalp, scalpel,