Comer
来自Big Physics
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wiktionary
From Middle English comere, equivalent to come + -er.
etymonline
comer (n.)
late 14c., "visitor, one who approaches or is lately arrived," agent noun from come. Meaning "one showing promise" is attested from 1879. Phrase all comers "everyone who chooses to come" is recorded from 1560s. Middle English also had comeling "a comer, newcomer, stranger" (mid-13c.), also "stray animal" (c. 1200).
