Mar (?), n. A small lake. See Mere. [Prov. Eng.][1913 Webster]
Mar, v. t. [imp. & p. p. Marred (märd); p. pr. & vb. n. Marring.] [OE. marren, merren, AS. merran, myrran (in comp.), to obstruct, impede, dissipate; akin to OS. merrian, OHG. marrjan, merran; cf. D. marren, meeren, to moor a ship, Icel. merja to bruise, crush, and Goth. marzjan to offend. Cf. Moor, v.] 1. To make defective; to do injury to, esp. by cutting off or defacing a part; to impair; to disfigure; to deface.[1913 Webster]
I pray you mar no more trees with wiring love songs in their barks.
But mirth is marred, and the good cheer is lost.
Ire, envy, and despairWhich marred all his borrowed visage.
2. To spoil; to ruin. “It makes us, or it mars us.” “Striving to mend, to mar the subject.” Shak.[1913 Webster]
Mar, n. A mark or blemish made by bruising, scratching, or the like; a disfigurement.[1913 Webster]