名詞 eleven:

1. the cardinal number that is the sum of ten and one
   同義詞：11, XI
2. a team that plays football
   同義詞：football team

形容詞 eleven:

1. being one more than ten
   同義詞：11, xi

1. There are eleven players in the game.
   這場(chǎng)比賽中有11名選手。
2. The meeting broke up at eleven o'clock.
   會(huì)議在十一點(diǎn)鐘散會(huì)。
3. This train gets to Chicago at eleven o'clock tonight.
   這班火車今晚十一時(shí)可達(dá)芝加哥。
4. I have received eleven Christmas cards by now.
   到現(xiàn)在為止，我已經(jīng)收到了十一張圣誕卡片。
5. Mr Hood said that he would have to go on, as he was due at a meeting at eleven o'clock.
   胡德先生說由于他11點(diǎn)鐘要出席一個(gè)會(huì)議，得先走一步了。
6. Not until eleven o'clock did he come home.
   他到十一點(diǎn)才回家。
7. A cricket team is comprised of eleven players.
   一個(gè)板球隊(duì)由11名隊(duì)員組成。
8. The little boy left primary school at eleven.
   這個(gè)小男孩十一歲時(shí)小學(xué)畢業(yè)。

e.lev.en

n.（名詞）
The cardinal number equal to 0 + .
十一：等于0+的基數(shù)
The th in a set or sequence.
第十一：在一套或一個(gè)序列中的第十一個(gè)
Something with parts or members, especially a football team.
十一個(gè)一組：指有十一個(gè)部分或成員的東西，尤指足球隊(duì)

來源：
Middle English elleven
中古英語 elleven
from Old English endleofan * see oi-no-
源自 古英語 endleofan *參見 oi-no-

【引伸】
elev.en
adj.（形容詞）
pron.（代詞）