(idiomatic) When needed or required.

Standing elevated on the tips of one's toes. / Moving carefully, quietly, warily or stealthily on the tips of one's toes.

Not engaged in an assigned task, duty or occupation.

(archaic) Used in similes to describe the appearance of an untidy or bedraggled person.

The times, typically from about 9am to 5pm, Monday to Friday, when non-24/7 office workers are at their desks.

(idiomatic) A small, indefinite number of times.

Expressed as a measure of central tendency (usually the arithmetic mean). / (idiomatic) Usually, typically; as a rule; as often as not.

A pair of small low-powered binoculars for use at a theatrical performance.

(idiomatic) For the most part; apart from some insignificant details.

Loaned or lent.