Quenya 

tol

island, isle

tol noun "island, isle" (rising with sheer sides from the sea or from the river, SA:tol, VT47:26). In early "Qenya", the word was defined as "island, any rise standing alone in water, plain of green, etc" (LT1:269). The stem is toll-; the Etymologies as published in LR gives the pl. "tolle" (TOL2), but this is a misreading for tolli (see VT46:19 and compare LT1:85). The primitive form of tol is variously cited as ¤tolla (VT47:26) and ¤tollo (TOL2).