— spec'er, specker , n.
/spek/ , n, adj., v., spec'd or specked or specced, spec'ing or specking or speccing .
n.
1. Usually, specs . specification (def. 2).
2. speculation.
3. on spec , made, built, or done with hopes of but no assurance of payment or a sale; without commitment by a client or buyer: ad illustrations done on spec; luxury homes built on spec and sold before completion.
adj.
4. built, done, bought, etc., as a speculation: the construction of spec houses.
v.t.
5. to provide specifications for: Their newest truck was spec'd by a computer.
[ 1785-95, Amer.; by shortening ]