noun
lintel (without sliding door grooves)
Architectural term for a lintel that lacks the grooves needed for a sliding door; contrasted with 蹴放し (けはなし), which has grooves.
See also: 蹴放し
この古い家のまぐさには、引き戸の溝がありません。
The lintel of this old house has no grooves for a sliding door.
蹴放し is a lintel with grooves for a sliding door, while まぐさ is a lintel without such grooves.
The origin is uncertain; the word is a native Japanese architectural term.