A type of people or things similar to those already referred to.
Old English ilca ‘same’, of Germanic origin; related to alike.
In modern usage, ilk is used in phrases such as of his ilk and of that ilk to mean ‘type’ or ‘sort.’ This sense arose out of a misunderstanding of the earlier, Scottish use in the phrase of that ilk, where it means ‘of the same name or place.’ For this reason, some traditionalists regard the modern use as incorrect. It is, however, the only common current use and is now part of standard English
“You know, salesmen and people of that ilk.”
Originally: a bald head; a bald-headed person. In later use also: a pitiable, lowly, or foolish person; a shabby or unkempt person. Frequently used without article, as though a proper name.
Early 16th century; earliest use found in John Skelton (c1460–1529), poet. In some forms apparently partly from pilled + garlic and partly from peeled + garlic; in some forms apparently partly from pill + garlic and partly from peel + garlic.