单词 swartback 释义 swartback, swarthback local.Also 5 suerthbak, 7 swarth bag.[ad. Icel. svartbakur (whence Norw. svartbak, Da. svartbagmaage): see swart a., swarth a. + back n.1 Cf. swabie.]The great black-backed gull, Larus marinus.c1450Holland Howlat...