Alternative forms 
Alteration influenced by Medieval Latin indorsare of Middle English endosse, from Old French endosser (“to put on back”), from Latin dossum, alternative form of dorsum (“back”), from which also dorsal (“of the back”). That is, the ‘r’ was dropped in Latin dossum, which developed into Old French and then Middle English endosse, and then the ‘r’ was re-introduced into English via the Medieval Latin indorsare, which had retained the ‘r’. Note that the alternative spelling indorse also uses the initial ‘i’ from Latin (in-, rather than en-), but this form is now rare.
- To support, to back, to give one's approval to, especially officially or by signature.
- To write one's signature on the back of a cheque, or other negotiable instrument, when transferring it to a third party, or cashing it.
- To give an endorsement.
Derived terms 
Related terms 
endorse (plural endorses)
Usage notes 
When a narrow, vertical stripe appears in a coat of arms, it is usually termed a pallet when used as the primary charge in the absence of a pale. The term endorse is typically used only when the stripes flank a central and wider pale. Diminutive stripes flanking other ordinaries are termed cottises.