The open hall and galleries have suspended timber floors, and, rather than running floorboards over joists as we do, they use short tongued planks to span between grooves in the supporting beams.
3(of a note) played by tonguing.
（曲子）用运舌法吹奏的
a series of rapidly tongued notes
Definition of tongued in US English:
tongued
adjectivetəNGd
1in combinationHaving a specified kind of tongue.
有…舌的
the blue-tongued lizard
蓝舌蜥蜴。
2(in carpentry) constructed using a tongue.
（木工）用了榫舌的
the tongued boards of the ceiling
Example sentencesExamples
The open hall and galleries have suspended timber floors, and, rather than running floorboards over joists as we do, they use short tongued planks to span between grooves in the supporting beams.