Douglas Harper's Etymology Dictionary
Usage examples of "cross-beam".
He moved sideways along cross-beams, ensuring that he came to ground behind the backs of the houses, in the little scrap of wasteland that surrounded the foetid stub of the canal.
He desired to be certain, at least, that he was here, in the low-studded, cross-beamed, oaken-panelled parlour, and not in some other spot, which had stereotyped itself into his senses.