
1) Boxes 2) Masts 3) Trains
Found on
https://www.crosswordclues.com/clue/spars

1) WWII women reservists 2) Bandies words 3) Bickers 4) Booms 5) Booms and masts 6) Booms on board 7) Bowsprits 8) Boxes 9) Boxes at the gym 10) Cleavable minerals 11) Coast Guard girls 12) Coast Guard group 13) Coast guard women 14) Engages in violent practices 15) Exchanges jabs 16) Exchanges verbal jabs
Found on
https://www.crosswordclues.com/clue/spars

SPARS was the nickname for the United States Coast Guard Women`s Reserve, created 23 November 1942 with the signing of Public Law 773 by President Franklin Delano Roosevelt. The name is the contraction of the Coast Guard motto: Semper Paratus and its English translation, Always Ready. The name also refers to a spar in nautical usage. Like the oth....
Found on
http://en.wikipedia.org/wiki/SPARS

Short lengths (27"- 30") of cleft hazel that are used by thatchers to secure layers of straw or reed to rooves when thatching. Pointed at both ends they are twisted and used as a pronged peg to hold the thatch. Longer layers of split hazel are also used to hold the outer layer of thatch. These are often known as liggers. Most spar makers will be ab...
Found on
http://www.coppice-products.co.uk/Glossary.htm

Spanwise load-carrying members of a wing or tail
Found on
http://www.encyclo.co.uk/local/22135

Common Rafters.
Found on
http://www.woodworkersuk.co.uk/blog/carpentry-and-joinery-glossary/carpentr
No exact match found.