thousandn.[OE. ousend, usend, AS. send; akin to OS. thsundig, thsind, OFries. thusend, D. duizend, G. tausend, OHG. tsunt, dsunt, Icel. sund, shund, Sw. tusen, Dan. tusind, Goth. sundi, Lith. tukstantis, Russ. tuisiacha; of uncertain origin.]1. The number of ten hundred; a collection or sum consisting of ten times one hundred units or objects.()2. Hence, indefinitely, a great number.()A thousand shall fall at thy side, and ten thousand at thy right hand. (Ps. xci. 7.)()3. A symbol representing one thousand units; as, 1,000, M or CI.()a.1. Consisting of ten hundred; being ten times one hundred.()2. Hence, consisting of a great number indefinitely.(Shak.)