Scrabble?! OWT

Definitions of OWT in various dictionaries:

There are names for the number 0 in English and related concepts, and there are concomitant names for the decades whose tens column contains the number 0. The names for the number 0 include "zero", "cipher", "null", "naught", "nought", "love", "duck", "nil", "nada", "zilch", "zip", (the letter) "o" (often spelled "oh"), "aught", and "ought". There are various subtleties of usage amongst them all. Some usage of these terms is driven by a desire to maintain an explicit distinction between digit zero and letter O, which, because they are both usually represented graphically in English orthography (and indeed most orthographies using Latin script and Arabic numerals) with a simple circle or oval, have a centuries-long history of being frequently conflated. Thus some of the terms discussed below are the phonetic analog of the graphical convention of slashed zerothat is, both are an effort to keep digit zero and letter O duly differentiated.