What Masonry Workers Do About this section. Masons use bricks, concrete blocks, or concrete to build walls, walkways, and fences. Masonry workers, also known as masons, use bricks, concrete blocks, concrete, and natural and manmade stones to build walls, walkways, fences, and other masonry structures. Duties Masons typically do the following: 1  Read blueprints or drawings to calculate materials needed. 2  Lay out patterns, forms, or foundations according to plans. 3  Break or cut materials to required size. 4  Mix mortar or grout and spread it onto a slab or foundation. 5  Clean excess mortar with trowels and other hand tools.
siniestro (feminine singular siniestra, masculine plural siniestros, feminine plural siniestras) 1  left, left-hand (direction) 2  sinister. 3  unhappy. 4  malicious, evil. ( 5 heraldry) sinister, sinistral.
Freebase(0.00 / 0 votes)Rate this definition: Platero. Platero is a little donkey, main character of Platero y yo, one of Juan RamÃ³n JimÃ©nez's most popular works. Platero is described in the lyric prose of the book as a small donkey, a soft, hairy donkey: so soft to the touch that he might be said to be made of cotton, with no bones. Only the jet mirrors of his eyes are hard like two black crystal scarabs..