dead·wood 
(dĕdwd′)
(dĕdwd′)n.
1. Dead wood, including fallen or standing trees, branches, and stumps.
2. One or more people or things considered as burdensome, superfluous, or serving no useful purpose: Management fired all the deadwood in the department as a cost-saving measure.
3. also dead wood Sports Fallen bowling pins that remain on the alley.
4. Nautical A timber or set of timbers helping to connect the keel of a vessel to the stem or the sternpost.
- threepence
- threepenny
- three-piece
- three-ply
- three-point landing
- three-point line
- three-quarter
- three-quarter binding
- three-ring circus
- three R's
- threescore
- three sheets in the wind
- three sheets to/in the wind
- three sheets to the wind
- Three Sisters
- threesome
- three-square
- three squares a day
- three-toed sloth
- three way
- three-way
- three-wheeler
- thremmatology
- threnodial
- threnodic