(carpentry, literally) One should double-check one's measurements for accuracy before cutting a piece of wood; otherwise it may be necessary to cut again, wasting time and material.

Clearly, without any doubt or complexity.

plural of five-and-ten

The cardinal number occurring after nine thousand nine hundred and ninety-eight and before ten thousand, represented in Arabic numerals as 9,999. Represented in Roman numerals as IXCMXCIX.

(informal) A short distance.

A card game, similar to canasta, using two packs of cards.

(idiomatic, vulgar) Alternative form of and shit

(humorous) A response to being greeted with "hello".

(idiomatic) Intermittently.

(statistics) A graphical summary of a numerical data sample through five statistics — median, upper quartile, lower quartile, and upper extreme and lower extreme values — by depiction as a box with its edges at the quartile marks and an internal line at the median and with lines protruding from the box as far as the extremal values.