There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.

Gnomish

cross

noun. ball

Gnomish [GL/26; GL/27] Group: Eldamo. Published by

taru

noun. cross; crossing

A word appearing as G. {taru, tarb >>} taru in the Gnomish Lexicon of the 1910s meaning either “cross” or “crossing” (GL/69), clearly the equivalent of ᴱQ. tarwe “cross, crucifix” under the early root ᴱ√TARA in the contemporaneous Qenya Lexicon (QL/89).

Neo-Sindarin: Since I retain ᴺQ. tarwë “cross, crucifix” for purposes of Neo-Quenya, I would retain ᴺS. taru for Neo-Sindarin as well, but only in the sense “cross, ✱crucifix”. For “crossing” I would use later words like athrad.

Gnomish [GL/69; GL/71; LT2A/Taruithorn] Group: Eldamo. Published by

tranc

adjective. criss-cross, crossed; cross, at cross purpose, perverse

A word in the Gnomish Lexicon of the 1910s meaning either “criss-cross, crossed” or “cross, at cross purposes, perverse” (GL/71), probably based on the early root ᴱ√TARA having to do with crossing (QL/89).

trantha-

verb. to cross (tr. & intr.); to mark with a cross

A word in the Gnomish Lexicon of the 1910s meaning either “to cross, tr. & intr.” or “to mark with a cross” (GL/71), probably based on the early root ᴱ√TARA having to do with crossing (QL/89).

trôn Archaic

noun. a cross; a crossing

An archaic (marked “†”) equivalent of G. taru “cross, crossing” in the Gnomish Lexicon of the 1910s (GL/71), probably based on the same early root ᴱ√TARA having to do with crossing (QL/89).


Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.