chain guard
(geology) A kind of volcanic rock, of intermediate to felsic composition, with high strontium to yttrium ratio, and enriched in light rare earth elements compared with the heavy rare earths
A compartment that encloses the chain and sprocket assemblies of a bicycle
(UK, with 'the') The Tower of London, especially seen as a place of imprisonment or punishment. / (countable) A habitational surname.; Alternative form of Towers
Misspelling of theanine.
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