Bolster

almohada

(large cushion or pillow)

almohadón

(large cushion or pillow)

cabecera

(large cushion or pillow)

matriz

(perforated plate in a punching machine on which anything rests when being punched)

volutas

((architecture) the rolls forming the ends or sides of the Ionic capital)

zapata

(short, horizontal, structural timber between a post and a beam)

reforzar

(to brace, reinforce, secure, or support)

sostener

(to brace, reinforce, secure, or support)