doss 來自拉丁詞根dors,doss，表示后背，后面或者背面
Sleep; rest
A crude or makeshift bed.
To go to bed, especially in a crude or makeshift bed; sleep.
n. 床鋪；簡陋床鋪；小客棧；睡眠
vi. 湊合躺下睡覺；將就過夜

例句：
After catching some doss, my mother went on with her work.
稍睡一會(huì)兒，我媽媽又繼續(xù)她的工作。

dosser
a basket for carrying objects on the back; pannier.
a person who has no permanent home and who lives and sleeps on the streets or in cheap HOSTELS
(spoken) a person who is very lazy
n. 馱筐；背筐;【俚】(無固定住宿,常露宿街頭或住廉價(jià)客棧者)流浪者;懶人

dossier “檔案”其實(shí)就是在檔案袋的“背面”寫上某人的姓名等
A collection of papers giving detailed information about a particular person or subject.
n. 檔案，卷宗；病歷表冊(cè)

dorsal
Anatomy. Of, toward, on, in, or near the back or upper surface of an organ, part, or organism.
Botany. Of or on the outer surface, underside, or back of an organ.
adj. 背部的；背的，背側(cè)的

例句：
The shark's dorsal fin was cut off by the fisherman.
鯊魚的背鰭被漁夫割了下來。

endorse
To write one's signature on the back of (a check, for example) as evidence of the legal transfer of its ownership, especially in return for the cash or credit indicated on its face.
To place (one's signature), as on a contract, to indicate approval of its contents or terms.
To acknowledge (receipt of payment) by signing a bill, draft, or other instrument.
To give approval of or support to, especially by public statement; sanction: endorse a political candidate. See Synonyms at approve.
vt.（支票等的）背書：簽名于（支票的）背面以作為合法轉(zhuǎn)讓其所有權(quán)的證據(jù)，尤其是作為對(duì)標(biāo)于其正面的現(xiàn)金或信用卡的交換 ；認(rèn)可；簽署；贊同；在背面簽名

例句：
She has already endorsed the check.
她已在這支票背書。
His driving licence has been endorsed.
他的駕駛執(zhí)照上有違章記錄。
Many senators endorsed the new bill.
很多議員贊同該項(xiàng)新法案。

endorsement
The act of endorsing: The athlete was highly paid to do endorsements of products.
Something, such as a signature or voucher, that endorses or validates.
Approbation; sanction; support: The candidates competed for the union's endorsement.
An amendment to a contract, such as an insurance policy, by which the original terms are changed.
n. 認(rèn)可，支持；背書；簽注（文件）