size

Concise Oxford English Dictionary © 2008 Oxford University Press:
size1

▶noun

• 1 a thing's overall dimensions or magnitude.

• 2 each of the classes into which garments or other articles are divided according to how large they are.

▶verb

• 1 alter or sort in terms of size or according to size.

• 2 (size something up) estimate or measure something's dimensions.

• 3 (size someone/thing up) informal form an estimate or rough judgement of someone or something.

– phrases
of a size (of two or more people or things) having the same dimensions.
that's the size of it informal that is the truth about a situation, however unpalatable.
to size to the dimensions wanted.

– derivatives
-sized (also -size) adjective,
sizer noun.

– origin ME (also in the sense ‘assize, ordinance fixing a rate of payment’): from OFr. sise, from assise ‘ordinance’, or a shortening of assize.

Concise Oxford English Dictionary © 2008 Oxford University Press:
size2

▶noun a gelatinous solution used in glazing paper, stiffening textiles, and preparing plastered walls for decoration. ▶verb treat with size.

– origin ME: perh. the same word as size1.