Noun
(rare, weaponry) A shot at something that is in the air, or a shot in midair.
(architecture) A channel for providing ventilation.
(botany) A filiform shoot of a water plant that floats on the surface of the water and contains bract-like organs.
(botany) A root-like structure that runs along the surface of the ground, putting down roots at a distance as a form of propagation.
Source: en.wiktionary.org