1
- the male parent of an animal, especially a stallion or bull kept for breeding雄性种畜（尤指种马或种牛）。
2
- archaic a respectful form of address for someone of high social status, especially a king〈古〉陛下; 阁下（对国王等社会地位高者的尊称）。
2.1
- a father or other male forebear父亲; 男性祖先。
with obj.
1- be the male parent of (an animal)（雄性种兽）繁殖（幼兽）。
1.1
- poetic/literary (of a person) be the father of〈诗/文〉（人）做…的父亲。
词源
Middle English (in sense 2)： from Old French, from an alteration of Latin senior （see SENIOR）. Sense 1 dates from the early 16th cent.