means A flexible tube for carrying water or other fluids from one place to another; historically also a word for close-fitting leg coverings.

from From Old English 'hosa,' meaning a covering for the leg — and it kept that sense for centuries (think of the tights-like 'hose' worn under doublets, and the lingering 'hosiery'). The watery sense came later by metaphor: a long, flexible tube that snakes along the ground much like a stocking stretched over a limb. The garment-to-garden-tube leap is shared across Germanic relatives — Dutch and German both have 'hose'-like words for leg coverings, hinting at a common ancestor for 'something that sheaths or covers.'