pea
/piː/noun
1
- a spherical green seed which is widely eaten as a vegetable豌豆。
1.1
- with modifier any of a number of edible spherical seeds of the pea family, e.g. chick pea and pigeon pea豆科植物可食用的圆形种子。
1.2
- W. Indian any legume, including peas, beans, or lentils, eaten as a vegetable〈西印度〉豆荚（当作蔬菜的任何一种豆, 包括豌豆、菜豆或小扁豆）。
2
- the hardy Eurasian climbing plant which yields pods containing these seeds豆角。
2.1
- Pisum sativum, family Leguminosae (or Fabaceae; the pea family). The members of this family (known as legumes) are sometimes divided among three smaller families: Papilionaceae (peas, beans, clovers, vetches, brooms, laburnums, etc.), Mimosaceae (mimosas, acacias), and Caesalpiniaceae (cassia, carob, and many tropical timber trees).拉丁名Pisum sativum,豆科。这一科的成员（被称作豆科植物）有时被分成三个更小的科：蝶形花科（豌豆、菜豆、苜蓿、野豌豆、金雀花、金链花等）、含羞草科（含羞草、金合欢）、苏木科（肉桂、长角豆, 以及很多热带的木材树种）。
2.2
- used in names of other plants of this family which yield round seeds or have flowers resembling those of the pea, e.g. sweet pea［用于这一科中开类似豌豆属花的其他植物名称中, 如sweet pea］。
短语
like peas（或two peas）in a pod
- so similar as to be indistinguishable or nearly so一模一样。
词源
mid 17th cent.: back-formation from PEASE (interpreted as plural).