"sac" - key terms from Wikipedia

air sac
amniotic sac
cactus sac
cul de sac
dural sac
egg sac
embryo sac
ink sac
lacrimal sac
le sac	des filles
lesser sac
membranous sac
pericardial sac
sac
sac	and fox
sac	crest
sac	fungi
sac	of blood
sac	planners
sac	state
sac	system
ventral sac
vocal sac
yellow sac	spider
yolk sac