the.com/hard roll

means A small bread roll with a firm, crusty exterior and a dense, chewy interior, as opposed to the soft-sided rolls meant to be squished flat with butter.

from Straightforward compound English — 'hard' describing the crust's resistance to the tooth, 'roll' from Old French 'rolle'/Latin 'rotulus' (a small wheel or roll), the shape bread naturally takes when hand-formed into a bun. The term exists mainly to distinguish itself from its soft cousins; American delis and bakeries lean on it hard, especially in the Northeast, where asking for 'a hard roll with butter' is practically a dialect test.