On somebody's back or shoulders.

(transitive) To carry (someone) on the back or shoulders. / (transitive, intransitive) To attach or append something to another (usually larger) object or event.

(countable) A ride on somebody's back or shoulders. / An act or instance of piggybacking. / (medicine, countable, uncountable) The connection of one intravenous drip to another.

Alternative form of piggy bank

plural of piggybank

(genetics) A transposon used in genetic engineering

plural of piggybacker

One that piggybacks.

A plant native to moist forests near the coast of northwestern North America, Tolmiea menziesii, grown as an ornamental groundcover or container plant for its attractive green foliage with plantlets growing from the bases of the leaves.

plural of piggyback plant