(construction, architecture) In any framed work, a horizontal tie other than sill and plate or other principal ties, securing uprights to one another.

What are Interties?

: an interconnection permitting passage of current between two or more electric utility systems.

What do you mean by BT?

(Entry 1 of 2) : a preparation of a bacterium (Bacillus thuringiensis) often modified by genetic engineering for use as a biopesticide against insects and especially lepidopteran larvae also : the bacterium itself. Bt. abbreviation.