1
- cheerfully optimistic乐观的; 乐天的：
they are not sanguine about the prospect.
他们对前景并不乐观。
1.1
- (in medieval science and medicine) of or having the constitution associated with the predominance of blood among the bodily humours, supposedly marked by a ruddy complexion and an optimistic disposition（中世纪科学和医学）多血质的。
1.2
- archaic (of the complexion) florid; ruddy〈古〉（肤色）红润的; 血色好的。
1.3
- archaic bloody or bloodthirsty〈古〉流血的; 嗜血成性的, 好杀戮的。
2
- poetic/literary & Heraldry blood-red〈诗/文〉【纹章】血红的。
mass noun
1- a blood-red colour血红色。
1.1
- a deep red-brown crayon or pencil containing iron oxide（含有氧化铁的）红粉蜡笔; 红粉笔。
1.2
- Heraldry a blood-red stain used in blazoning【纹章】血红色着色剂。
派生词
sanguinely
adverbsanguineness
noun词源
Middle English: from Old French sanguin（e） 'blood red', from Latin sanguineus 'of blood', from sanguis, sanguin- 'blood'.