double doors; double-opening from the centre
Describes doors, windows, or lids that open from the centre outward in two leaves, like French doors or casement windows. Can be used as a noun or with の to modify another noun.
This refrigerator has double doors that open from the centre.
I opened the casement windows to let the breeze through.
butterfly fillet; centre-cut filleting
Culinary term for filleting fish or chicken by cutting along the centre and opening the two halves flat, resembling double doors. Used in recipes and cooking instructions.
Butterfly-fillet the fish, then sprinkle with salt.
Butterfly the chicken breast and pound it thin.